Nissan - Maxima - Wiring Diagram - 1992 - 1995

Installation Instructions for: EMS P/N 30-6620 1989-1998 Nissan Skyline RB26DETT 1993-1998 Nissan Skyline RB25DETT 1989-1994 Nissan Skyline RB20DET 1990-1995 Nissan 300ZX VG30DE, VG30DETT 1992-1994 Nissan Maxima VE30DE 1994-1996 Nissan Silvia SR20DET (Except Europe) 1988-1990 Nissan Silvia S13 CA18DET 1988-1990 Nissan 180SX CA18DET
! WARNING: This installation is not for the tuning novice nor the PC illiterate! Use this system with EXTREME caution! The AEM EMS System allows for total flexibility in engine tuning. Misuse of this product can destroy your engine! If you are not well versed in engine dynamics and the tuning of management systems or are not PC literate, please do not attempt the installation. Refer the installation to a AEM trained tuning shop or call 800-423-0046 for technical assistance. You should also visit the AEM EMS Tech Forum at http://www.aempower.com NOTE: AEM holds no responsibility for any engine damage that results from the misuse of this product! This product is legal in California for racing vehicles only and should never be used on public highways. Note: Part number 30-6620 supersedes and replaces p/n 30-1620, 30-1621, and 30-1622. Vehicle 1989-1998 Nissan Skyline (RB26DETT) 1993-1998 Nissan Skyline (RB25DETT) 1989-1994 Nissan Skyline (RB20DET) 1991-1995 Nissan 300ZX (VG30DETT, VG30DE) 1992-1994 Nissan Maxima (VE30DE) 1994-1996 Nissan Silvia S14 (SR20DET) 1988-1990 Nissan Silvia S13 (CA18DET) 1988-1990 Nissan 180SX (CA18DET) Series I EMS 1621/U 1621/U 1621/U 1620/U 1620/U 1622/U 1622/U 1622/U  2010 ADVANCED ENGINE MANAGEMENT INC. 2205 126th Street Unit A Hawthorne, CA. 90250 Phone: (310) 484-2322 Fax: (310) 484-0152 http://www.aempower.com Instruction Part Number: 10-6620 Page 1 of 14 Series II EMS 6620 6620 6620 6620 6620 6620 6620 6620 Thank you for purchasing an AEM Engine Management System. The AEM Engine Management System (EMS) is the result of extensive development on a wide variety of cars. Each system is engineered for the particular application. The AEM EMS differs from all others in several ways. The EMS is a stand alone system, which completely replaces the factory ECU and features unique Plug and Play Technology, which means that each system is configured especially for your make and model of car without any jumper harnesses. There is no need to modify your factory wiring harness and in most cases your car may be returned to stock in a matter of minutes. For stock and slightly modified vehicles, the supplied startup calibrations are configured to work with OEM sensors, providing a solid starting point for beginner tuning. For more heavily modified cars, the EMS can be reconfigured to utilize aftermarket sensors and has many spare inputs and outputs allowing the elimination of add-on rev-limiters, boost controllers, nitrous controllers, fuel computers, etc. It also includes a configurable onboard 1MB data logger that can record any 16 EMS parameters at up to 250 samples per second. Every EMS comes with all functions installed and activated; there is no need to purchase options or upgrades to unlock the full potential of your unit. The installation of the AEM EMS on the supported vehicles uses the stock sensors and actuators. After installing the AEMTuner software, the startup calibration will be saved to the following folder on your PC: C:\Program Files\AEM\AEMTuner\Calibrations\Nissan\ Multiple calibrations may be supplied for each EMS; additional details of the test vehicle used to generate each calibration can be found in the Calibration Notes section for that file. Please visit the AEM Performance Electronics Forum at http://www.aempower.com and register. We always post the most current strategy release, PC Software and startup calibrations online. On the forum, you can find and share many helpful hints/tips to make your EMS perform its best. TUNING NOTES AND WARNING: While the supplied startup calibration may be a good starting point and can save considerable time and money, it will not replace the need to tune the EMS for your specific application. AEM startup calibrations are not intended to be driven aggressively before tuning. We strongly recommend that every EMS be tuned by someone who is already familiar with the AEM software and has successfully tuned vehicles using an AEM EMS. Most people make mistakes as part of the learning process; be warned that using your vehicle as a learning platform can damage your engine, your vehicle, and your EMS. Read and understand these instructions BEFORE attempting to install this product. 1) Install AEMTuner software onto your PC The latest version of the AEMTuner software can be downloaded from the AEMTuner section of the AEM Performance Electronics forums. Series 2 units are not supported by the older AEMPro tuning software. 2) Remove the Stock Engine Control Unit a) Access the stock Engine Control Unit (ECU). The Skyline ECU is located behind the passenger-side kick panel. b) Carefully disconnect the wiring harness from the ECU. Avoid excessive stress or pulling on the wires, as this may damage the wiring harness. Some factory ECUs use a bolt to retain the factory connectors, and it must be removed before the harness can be disconnected. There may be more than one connector, and they must all be removed without damage to work properly with the AEM ECU. Do not cut any of the wires in the factory wiring harness to remove them. c) Remove the fasteners securing the ECU to the car body, and set them aside. Do not destroy or discard the factory ECU, as it can be reinstalled easily for street use and troubleshooting. 3) Install the AEM Engine Management System a) Plug the factory wiring harness into the AEM EMS and position it so the wires are not pulled tight or stressed in any manner. Secure the EMS with the provided Velcro fasteners. b) Plug the comms cable into the EMS and into your PC. c) Turn the ignition on but do not attempt to start the engine. d) At the time these instructions were written, new EMS units do not require USB drivers to be installed on the PC. Windows e) With the AEMTuner software open, select ECU>>Upload Calibration to upload the startup calibration file (.cal) that most closely matches the vehicle’s configuration to be tuned. Check the Notes section of the calibration for more info about the vehicle it was configured for. These files can be found in the following folder: C:\Program Files\AEM\AEMTuner\Calibrations\Nissan\ Set the throttle range: Select Wizards>>Set Throttle Range and follow the onscreen instructions. When finished, check that the ‘Throttle’ channel never indicates less than 0.2% or greater than 99.8%, this is considered a sensor error and may cause some functions including idle feedback and acceleration fuel to operate incorrectly. g) For Nissan vehicles, the OEM camshaft angle sensor’s trigger disc must be removed and an AEM trigger disc must be installed before attempting to start the engine. Please see pg. 7 for more info. f) 4) Ready to begin tuning the vehicle. a) Before starting the engine, verify that the fuel pump runs for a couple of seconds when the key is turned on and there is sufficient pressure at the fuel rail. If a MAP sensor is installed, check that the Engine Load indicates something near atmospheric pressure (approximately 101kPa or 0 PSI at sea level) with the key on and engine off. Press the throttle and verify that the ‘Throttle’ channel responds but the Engine Load channel continues to measure atmospheric pressure correctly. b) Start the engine and make whatever adjustments may be needed to sustain a safe and reasonably smooth idle. Verify the ignition timing: Select Wizards>>Ignition Timing Sync from the pull-down menu. Click the ‘Lock Ignition Timing’ checkbox and set the timing to a safe and convenient value (for instance, 10 degrees BTDC). Use a timing light and compare the physical timing numbers to the timing value you selected. Use the Sync Adjustment Increase/Decrease buttons to make the physical reading match the timing number you selected. Crankshaft timing marks are not labeled for some vehicles. Consult the factory service manual for more information. The diagram below shows labels for the R33 Skyline: c) Note: This calibration needs to be properly tuned before driving the vehicle. It is intended for racing vehicles and may not operate smoothly at idle or part-throttle. NEVER TUNE THE VEHICLE WHILE DRIVING 5) Troubleshooting an engine that will not start a) Double-check all the basics first… engines need air, fuel, compression, and a correctly-timed spark event. If any of these are lacking, we suggest checking simple things first. Depending on the symptoms, it may be best to inspect fuses, sufficient battery voltage, properly mated wiring connectors, spark using a timing light or by removing the spark plug, wiring continuity tests, measure ECU pinout voltages, replace recently-added or untested components with known-good spares. Check that all EMS sensor inputs measure realistic temperature and/or pressure values. b) If the EMS is not firing the coils or injectors at all, open the Start tab and look for the ‘Stat Sync’d’ channel to turn ON when cranking. This indicates that the EMS has detected the expected cam and crank signals; if Stat Sync’d does not turn on, monitor the Crank Tooth Period and T2PER channels which indicate the time between pulses on the Crank and T2 (Cam) signals. Both of these channels should respond when the engine is cranking, if either signal is not being detected or measuring an incorrect number of pulses per engine cycle the EMS will not fire the coils or injectors. c) If the Engine Load changes when the throttle is pressed this usually indicates that there is a problem with the MAP sensor wiring or software calibration (when the EMS detects that the MAP Volts are above or below the min/max limits it will run in a failsafe mode using the TPS-to-Load table to generate an artificial Engine Load signal using the Throttle input). This may allow the engine to sputter or start but not continue running properly. Application Notes for EMS P/N 30-6620 RB26DETT, RB25DETT, RB20DET, VG30DE, VG30DETT, VE30DE, SR20DET, and CA18DET Make: Models: Years Covered: Displacement: Engine Configuration: Firing Order: N/A, S/C or T/C: Load Sensor Type: # Coils: Ignition driver type: # Injectors: Injector Flow Rate: Injector Resistance: Factory Inj Resistors: Injection Mode: Knock Sensors used: Lambda Sensors: Idle Motor Type: Main Relay Control: Crank Pickup Type: **Crank Teeth/Cycle: Cam Pickup Type: **Cam Teeth/Cycle: Transmission Offered: Trans Supported: Drive Options: Supplied Connectors: AEM extension/patch harness Nissan Various, see pg.1 Various, see pg.1 2.0L / 2.5L / 2.6L (Skyline) Inline 6 (Skyline), V6 (300ZX) 1-5-3-6-2-4 (Skyline), 1-2-3-4-5-6 (300ZX), 1-3-4-2 (SR20/CA18) Turbocharged MAF 6 0-5V, falling edge trigger 6 (P&H drivers: Inj 1-6) 270cc/min (180SX, Skyline RB20), 370cc/min (300ZX, SR20DET), 380cc/min (Skyline GTS-T), 440cc/min (Skyline GT-R) 2 ohm (GT-R, 180SX), 11 ohm (others) Yes (GT-R, 180SX), No (others) Sequential 2 (Skyline, 300ZX), 1 (others) 2 (aftermarket wideband: factory O2 not supported) Pulse Width Yes (not user programmable) Optical 24 (AEM trigger disc) Optical 1 (AEM trigger disc) M/T, Automatic Spare Injector Driver: Spare Injector Driver: Spare Injector Driver: Spare Injector Driver: Spare Injector Driver: Spare Injector Driver: Inj 7, Pin 17 Inj 8, Pin 33 (except SR20) Inj 9, Pin 111 Inj 10, Pin 115 Inj 11, Pin 113 Inj 12, Pin 102 Boost Solenoid: PW 2, Pin 5 and Pin 25 Speed Density Input: MAP, Pin 35 EGT 1 Location: EGT 2 Location: EGT 3 Location: EGT 4 Location: Spare 0-5V Channels: Spare 0-5V Channels: Spare Low Side Driver: Spare Low Side Driver: Check Engine Light: Pin 39 Pin 21 Pin 31 Pin 47 ADCR11, Pin 104 ADCR14, Pin 37 Low Side 3, Pin 19 Low Side 12, pin 8 Low Side 10, Pin 32 Spare Switch Input: Spare Switch Input: *Switch 1, Pin 54 *Switch 2, Pin 34 M/T only AWD (Skyline) / RWD (Skyline, 300ZX, Silvia, 180SX)/ FWD (Maxima) N/A Spare Switch Input: Spare Switch Input: *Switch 3, Pin 22 *Switch 4, Pin 44 A/C Switch Input: *Switch 6, Pin 46 30-2998 Clutch Switch Input: --- Wire View of AEM EMS WARNING: *All switch input pins must connect to ground; the switch should not provide 12V power to the EMS because that will not be detected as on or off. **Cam / Crank Angle Sensor: AEM trigger disc MUST be used Discrepancies have been observed in the OEM cam/crank angle signals between model years and/or trim levels; to avoid confusion the Series 2 EMS does not support the OEM Nissan trigger pattern. A replacement trigger disc is now included with every Nissan EMS and must be installed before attempting to start the engine. Two discs are supplied with each 30-6620 EMS: one disc fits the CAS sensor found on RB, VG, CA and VE engines, the other disc fits SR and ’99-‘03 Skyline GTR sensors. Please consult the following instructions supplement, which will be installed to the C:\Program Files\AEM\AEMTuner\Instructions folder: ‘10-6600-B for EMS - 30-66XX supplement- CAS trigger install RB and SR engines.PDF’ ‘10-6620-A for EMS - 30-6620 supplement- CAS trigger install RB, VG and VE engines.PDF’ Engine Wiring Harnesses, ‘swapped’ engine installations Many Nissan wiring harnesses have been found to contain significant differences between model years and/or trim levels. Likely differences include: Crank signal, Cam signal, Ignition switch wiring (the Ignition switch input controls the Main Relay output), injector and coil destinations. Official documentation for many of these vehicles was not offered in English, so it would be very wise to double-check the pinout destinations for these circuits. This is especially true if the vehicle contains a ‘swapped’ engine or if the wiring harness has been cut, spliced, soldered, re-routed, re-pinned or modified in any other manner. It is the user’s responsibility to check that the wiring on the vehicle matches the pinout chart contained in this instruction manual. AEM will not be held responsible for loss or damage that can occur if the EMS is installed in a vehicle in which the wiring harness does not match the AEM-supplied pinout chart! The function of several pins have been changed from the original 30-1620, 30-1621, and 30-1622 EMS, please see the pinout chart for more info. Primary Load Sensor, EMS Fuel Strategy The factory MAF (mass air flow) sensor(s) can be removed to help decrease intake air restriction; the EMS can be configured to use a MAP sensor to determine engine load. It is recommended to use a 3.5 bar MAP sensor or higher (P/N 30-2130-50). The factory Mass Air Flow sensor can be used as the primary load input for the AEM EMS if desired (the EMS will only use one MAF sensor for fuel calculations even if the vehicle is equipped with two). Please check the Notes section of each calibration for more info about the vehicle setup and fuel strategy that calibration was configured to use. EMS Fuel Map, Boost Fuel Trim Table The 30-6620 maps provided utilize the “Boost Fuel Trim Table” to provide a 1:1 fuel compensation above and below atmospheric pressure. In the startup calibration, the “Boost Fuel Trim Table” is configured to provide twice as much fuel when the manifold pressure is twice as high and half the fuel when the manifold pressure is half as high; this should help simplify the tuning process for different vacuum and boost levels. Notice the values in the main “Fuel Map” do not change above 100 kPa (0 psi boost), the fuel correction is being made by the “Boost Fuel Trim Table.” Note: the “Boost Fuel Trim Table” must be adjusted if a different MAP sensor is installed or if the Load breakpoints are adjusted. The Boost Fuel Trim value should be set to -90 at 10kPa, 0 at 100 kPa, +100 at 200 kPa, +200 at 300 kPa, etc… Peak and Hold Injector Drivers Injectors 1-6 include Peak (4 amps) and Hold (1 amp) injector drivers. These drivers may be used with peak and hold or saturated type injectors. The factory Nissan wiring harness may contain a resistor pack to prevent excessive current when using low-impedance injectors with the stock ECU. With the 30-6620 installed, users can elect to remove and bypass the OEM resistor pack for more precise control of low-impedance injectors. Please note that the injector response time will be different with and without the factory injector resistor pack. If the OEM resistor pack has been removed and bypassed, please use the correct battery offset wizard for your injectors. Most battery offset wizards will specify if they are intended for use without a resistor pack. Wiring accessories to the EMS: Please follow this suggested wiring diagram when adding accessories such as UEGO gauges, MAP sensors, IAT sensors, or switches for use with the EMS. Note that wire polarity is not important for the Air Temperature sensor. Connection Diagram for EMS P/N 30-6620 PnP These pins are used in the AEM-supplied startup calibration. They can be reconfigured by the end user. Available Not used by the startup calibration. Modifications to the OEM wiring may be required before use. Dedicated The location of these pins is fixed and must not be changed. Pin ‘89-‘98 Nissan Skyline RB26DETT, ‘93-‘98 Nissan Skyline RB25DET, ‘89-‘94 Nissan Skyline RB20DET 1990-1995 Nissan 300ZX VG30DE, VG30DETT, 19921994 Nissan Maxima VE30DE ‘94-‘96 Nissan Silvia S14 SR20DET, ‘88-‘91 Nissan Silvia S13 CA18DET, ‘89-‘93 Nissan 180SX CA18DET 1 Ignition 1 Ignition 1 Ignition 1 2 Ignition 5 Ignition 2 Ignition 2 3 Ignition 3 Ignition 3 Ignition 3 (CA18DET only) 4 AAC Valve --- 5 A/T Control Unit ← ← Wastegate Solenoid (JDM CA18 only) 6 Cooling Fan Relay (RB26DETT only) Cooling Fan Sub Relay (300ZX Turbo Only) 7 Tachometer ← ← Low Side 7 8 --- AIV Solenoid (90-92 300ZX), Power Solenoid (Maxima) Variable Butterfly Solenoid (JDM CA18DET only) Low Side 12 9 Air Conditioner Relay 10 ECM Ground ← ← ← ← Coil 6 Air Conditioner Relay (CA18DET only) 11 Ignition 6 Ignition 4 Ignition 3 (SR20DET only) Ignition 4 (CA18DET only) 12 Ignition 2 Ignition 5 Ignition 4 (SR20DET only) 13 Ignition 4 Ignition 6 --- 14 A/T Control Unit 15 A/T Control Unit 16 ECCS Relay control, Ignition Relay control ← ← ← ← ← ← 17 --- Data Link Connector AEM EMS 30-6620 I/O Notes Coil 1 Output PnP for Coil 1, 0-5V rising edge trigger Coil 5 Output PnP for Coil 5, 0-5V rising edge trigger Coil 3 Output PnP for Coil 3, 0-5V rising edge trigger PW 1 Output PnP for Idle Air Control, connects to Pin 106 PW 2 Output PnP for Boost control, connects to Pin 25 Low Side 5 Output Output Output PnP for Cooling Fan (CA18DET only: PnP for AC) PnP for Tachometer, internal pull-up resistor to 12V Available, switched Ground, 1.5A max Low Side 6 Output PnP for A/C Compressor Power Ground Input Dedicated Output PnP for Coil 6, 0-5V rising edge trigger Coil 2 Output PnP for Coil 2, 0-5V rising edge trigger Coil 4 Output PnP for Coil 4, 0-5V rising edge trigger Idle 5 Output Avail, switched Ground / +12V, 1.5A Max Idle 6 Main Relay (control) Output Avail, switched +12V / Ground, 1.5A Max Output Dedicated, EMS activates relay with switched GND Data Link Connector Injector 7 Output Avail, Switched Ground, 1.5A max 18 Fuel Pump Relay Control Signal ← ← Low Side 1 Output PnP for Fuel Pump 19 Power Steering Oil Pressure Switch Cooling Fan Relay Cooling Fan Relay (SR20DET only) Low Side 3 Output PnP for Cooling Fan 20 ECM Ground ← ← Power Ground Input Dedicated Wire View of AEM EMS Connection Diagram for EMS P/N 30-6620 Pin ‘89-‘98 Nissan Skyline RB26DETT, ‘93-‘98 Nissan Skyline RB25DET, ‘89-‘94 Nissan Skyline RB20DET 1990-1995 Nissan 300ZX VG30DE, VG30DETT, 19921994 Nissan Maxima VE30DE ‘94-‘96 Nissan Silvia S14 SR20DET, ‘88-‘91 Nissan Silvia S13 CA18DET, ‘89-‘93 Nissan 180SX CA18DET AEM EMS 30-6620 21 Diagnostics Receive Data Input Available, jumper set for 0-5V Input Diagnostics Transmit Data ← ← EGT 2 22 ← ← Switch 3 Input Available, switch must connect to ground 23 Knock Sensor (Cylinders 1-3) Knock Sensor Knock Sensor Knock 1 Input Available, software knock filter Knock 2 Input Available, software knock filter 24 Knock Sensor (Cylinders 4-6) --- --- 25 Wastegate Valve Control Solenoid Signal Wastegate Solenoids (300ZX TT Only) Wastegate Solenoid (SR20DET only) 26 Mass Air Flow Sensor Ground ← ← 27 Rear Mass Air Flow Sensor (RB26DETT) Mass Air Flow Sensor Mass Air Flow Sensor 28 Engine Coolant Temperature Sensor ← ← 29 Front Heated Oxygen Sensor Signal Right Side Heated Oxygen Sensor Heated Oxygen Sensor Signal 30 Sensor Ground 31 Diagnostics Clock 32 Malfunction Indicator Lamp ← ← ← ← ← ← Output Notes PnP for Boost control, connects to Pin 5 Power Ground Input Dedicated MAF Input PnP for MAF Sensor Coolant Input PnP for Engine Coolant Temp Input Dedicated, 0-5V signal O2 #1 Sensor Ground EGT 3 Low Side Driver 10 Output Input Output Dedicated Available, jumper set for 0-5V Input Avail, Switched Ground, 1.5A Max 36 Exhaust Temperature Light (RB25DET Only) Front Mass Air Flow Ground (RB26DETT) Front Mass Air Flow Signal (RB26DETT) IAT Sensor (RB26) / FICD solenoid (RB25) 37 --- --- ADCR14 Input 38 Throttle Position Sensor ← ← TPS Input PnP for Throttle Position signal 39 --- EGR Temperature Sensor --- EGT 1 Input Available, jumper set for 0-5V Input 40 --- --- --- CAN1H --- Dedicated 33 34 35 FICD Solenoid (300ZX Only) Power Steering Oil Press sw Fuel Pump Voltage Control (300ZX Turbo Only) Fuel Temperature Sensor (300ZX Only) Cooling Fan Hi Speed (SR20DET) / Diagnostics (CA18DET) Power Steering Oil Press sw (SR20DET Only) Boost Pressure Sensor (SR20DET Only) PW 2 I/O --Mass Air Flow Pin D (CA18DET-Non Catalytic Model Only) Injector 8 Output PnP for Cooling Fan Switch 2 Input Available, switch must connect to ground MAP Input Available, use this pin for Speed Density conversion AIT Input Avail, Air Temperature, 2.2kΩ pull-up resistor Avail, 0-5 Volt Input Wire View of AEM EMS Connection Diagram for EMS P/N 30-6620 1990-1995 Nissan 300ZX VG30DE, VG30DETT, 19921994 Nissan Maxima VE30DE ‘94-‘96 Nissan Silvia S14 SR20DET, ‘88-‘91 Nissan Silvia S13 CA18DET, ‘89-‘93 Nissan 180SX CA18DET AEM EMS 30-6620 I/O 41 ‘89-‘98 Nissan Skyline RB26DETT, ‘93-‘98 Nissan Skyline RB25DET, ‘89-‘94 Nissan Skyline RB20DET Camshaft Position Sensor Reference Signal ← ← Cam Signal Input 42 Camshaft Position Sensor Signal ← ← Input 43 Ignition Switch (start position) Dedicated 44 ← ← Input Neutral Position Switch ← ← Crank Signal +12V starting power Notes Dedicated, must use AEM replacement trigger disc (connects to pin 51) Dedicated, must use AEM replacement trigger disc (connects to pin 52) Input Available, switch must connect to ground ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← ← Switch 4 Main relay (input) Input Dedicated, +12V activates Main Relay circuit Switch 6 Input PnP for A/C request switch EGT 4 Input Available, jumper set for 0-5V Input +5V Sensor +12V Switched Output Dedicated Input Dedicated, +12V power when ECCS Relay is on Power Ground Input Cam Signal Input Dedicated Dedicated, must use AEM replacement trigger disc (connects to pin 41) Crank Signal T3 (Vehicle Speed) Input Dedicated, connects to Pin 42 Input PnP for Vehicle Speed Sensor Switch 1 Input Available, switch must connect to ground O2 #2 Input Dedicated, 0-5V signal Dedicated, for use with GT-R auxiliary devices (Attesa AWD control, Dashboard display) Pin 45 Ignition Switch 46 Air Conditioner Switch 47 Diagnostics Check Signal 48 +5V Sensor reference power 49 Power Supply For ECM 50 ECM Ground 51 Camshaft Position Reference Signal 52 Camshaft Position Sensor Signal 53 Vehicle Speed Sensor Signal 54 Idle Position Switch 55 Rear Heated Oxygen Sensor (RB26DETT) Left Side Heated Oxygen Sensor Throttle Sensor Output Signal (Auto Trans only) A/C FICD (CA18DET Only) 56 Throttle Sensor Output Signal 57 Power source for Idle Position switch ← Throttle Sensor Output Signal (Auto Trans only) Power for Idle Position switch (CA18DET) 58 Power Supply Back-Up ← ← 59 Power Supply for ECM 60 ECM Ground ← ← ← ← TPS Out CAN1L Permanent +12V +12V Switched Power Ground Wire View of AEM EMS Output Output Dedicated Input Dedicated, backup power for internal datalog Input Dedicated, +12V power when ECCS Relay is on Input Dedicated Connection Diagram for EMS P/N 30-6620 Pin ‘89-‘98 Nissan Skyline RB26DETT, ‘93-‘98 Nissan Skyline RB25DET, ‘89-‘94 Nissan Skyline RB20DET 1990-1995 Nissan 300ZX VG30DE, VG30DETT, 19921994 Nissan Maxima VE30DE ‘94-‘96 Nissan Silvia S14 SR20DET, ‘88-‘91 Nissan Silvia S13 CA18DET, ‘89-‘93 Nissan 180SX CA18DET 101 Injector 1 Injector 1 Injector 1 102 --- EGR Control Solenoid Valve EGR Control Solenoid Valve (SR20DET only) Injector 12 103 Injector 3 Injector 3 Injector 3 Injector 3 Output PnP for Injector 3 (Peak & Hold 4A/1A driver) 104 Fuel Pump Voltage Control ← --- ADCR11 Input Available, 0-5 Volt Input 105 Injector 2 Injector 5 --- Injector 2 Output PnP for Injector 2 (Peak & Hold 4A/1A driver) 106 Fuel Pump Voltage Control-2 (RB26DETT) --- AAC Solenoid Valve 107 ECM Ground 108 ECM Ground ← ← ← ← 109 Back Electromotive Current Feedback Circuit Power Supply For ECM Power (CA18) / Back-Up Power (SR20) 110 Injector 5 Injector 2 Injector 2 111 --- PRVR Control Solenoid Valve PRVR Control Solenoid Valve (CA18) 112 Injector 6 (RB20: Inj 4) Injector 4 Injector 4 113 VTC Solenoid Valve (RB25DET) VTC Solenoid Valves VTC Solenoid Valve (SR20DET only) 114 Injector 4 (RB20: Inj 6) Injector 6 --- 115 Oxygen Sensor Heater Control Signal 116 ECM Ground ← ← ← ← AEM EMS 30-6620 I/O Notes Injector 1 Output PnP for Injector 1 (Peak & Hold 4A/1A driver) PW 1 Output Output Avail, Switched Ground, 1.5A max (not Peak&Hold) PnP for Idle Air Control, connects to Pin 4 Power Ground Input Dedicated Power Ground Input Dedicated --- --- Not Used Injector 5 Output PnP for Injector 5 (Peak & Hold 4A/1A driver) Injector 9 Output Avail, Switched Ground, 1.5A max (not Peak&Hold) Injector 6 Output PnP for Injector 6 (Peak & Hold 4A/1A driver) Injector 11 Output Avail, Switched Ground, 1.5A max (not Peak&Hold) Injector 4 Output PnP for Injector 4 (Peak & Hold 4A/1A driver) Injector 10 Power Ground Wire View of AEM EMS Output Input Avail, Switched Ground, 1.5A max (not Peak&Hold) Dedicated 30-1620 (Series 1) vs 30-6620 (Series 2) EMS differences: The EMS functions assigned to certain pins have been changed and no longer match the 30-1620 EMS. Unless otherwise noted, the following pins and functions will need to be manually reconfigured after using AEMTuner to convert a V1.19 (30-1620, Series 1 EMS) calibration for use with the 30-6620 Series 2 hardware. Pin ‘89-‘98 Nissan Skyline RB26DETT, ‘93-‘98 Nissan Skyline RB25DET, ‘89-‘94 Nissan Skyline RB20DET 1990-1995 Nissan 300ZX VG30DE, VG30DETT, 19921994 Nissan Maxima VE30DE ‘93-‘96 Nissan Silvia S14 SR20DET, ‘88-‘91 Nissan Silvia S13 CA18DET, ‘89-‘93 Nissan 180SX CA18DET Ignition 5 Ignition 2 Ignition 2 8 --- AIV Solenoid (90-92 300ZX), Power Solenoid (Maxima) 11 Ignition 6 Ignition 4 Variable Butterfly Solenoid (JDM CA18DET only) Ignition 3 (SR20DET only) Ignition 4 (CA18DET only) 13 18 40 Ignition 4 Ignition 6 --- Fuel Pump Relay Control Signal ← ← --- --- --- 56 Throttle Sensor Output Signal Throttle Sensor Output Signal (Auto Trans only) 57 Power source for Idle Position switch ← 102 113 --- EGR Control Solenoid Valve Throttle Sensor Output Signal (Auto Trans only) Power for Idle Position switch (CA18DET) EGR Control Solenoid Valve (SR20DET only) VTC Solenoid Valve (RB25DET) VTC Solenoid Valves 2 VTC Solenoid Valve (SR20DET only) 30-1620 function 30-6620 function Notes Coil outputs reallocated for sequential ignition, Coil2 no longer wasted spark Coil 5 moved to pin 2 Coil #2 Coil 5 Coil #5 LS 12 Coil #1 Coil 6 Coil #3 LS #11 Coil #4 Coil 4 LS 1 CAN1H HS #1 TPS Out HS 1 no longer available Idle #8 CAN1L Idle 8 not available Idle #7 LS #08 INJ 12 INJ 11 Copy settings from Idle 7 to INJ12 Coil outputs reallocated for sequential ignition, Coil1 no longer wasted spark Coil outputs reallocated for sequential ignition, Coil3 no longer wasted spark LS 11 no longer available Coil 4 moved to pin 13 Copy settings from LS 8 to INJ11 AEM Electronics Warranty Advanced Engine Management Inc. warrants to the consumer that all AEM Electronics products will be free from defects in material and workmanship for a period of twelve months from date of the original purchase. Products that fail within this 12-month warranty period will be repaired or replaced when determined by AEM that the product failed due to defects in material or workmanship. This warranty is limited to the repair or replacement of the AEM part. In no event shall this warranty exceed the original purchase price of the AEM part nor shall AEM be responsible for special, incidental or consequential damages or cost incurred due to the failure of this product. Warranty claims to AEM must be transportation prepaid and accompanied with dated proof of purchase. This warranty applies only to the original purchaser of product and is non-transferable. All implied warranties shall be limited in duration to the said 12-month warranty period. Improper use or installation, accident, abuse, unauthorized repairs or alterations voids this warranty. AEM disclaims any liability for consequential damages due to breach of any written or implied warranty on all products manufactured by AEM. Warranty returns will only be accepted by AEM when accompanied by a valid Return Merchandise Authorization (RMA) number. Product must be received by AEM within 30 days of the date the RMA is issued. Please note that before AEM can issue an RMA for any electronic product, it is first necessary for the installer or end user to contact the tech line at 1-800-423-0046 to discuss the problem. Most issues can be resolved over the phone. Under no circumstances should a system be returned or a RMA requested before the above process transpires. AEM will not be responsible for electronic products that are installed incorrectly, installed in a non approved application, misused, or tampered with. Any AEM electronics product can be returned for repair if it is out of the warranty period. There is a minimum charge of $75.00 for inspection and diagnosis of AEM electronic parts. Parts used in the repair of AEM electronic components will be extra. AEM will provide an estimate of repairs and receive written or electronic authorization before repairs are made to the product.  2010 ADVANCED ENGINE MANAGEMENT INC. 2205 126th Street Unit A Hawthorne, CA. 90250 Phone: (310) 484-2322 Fax: (310) 484-0152 http://www.aempower.com Instruction Part Number: 10-6620 Page 14 of 14