AEM Series 2 Plug Play EMS 306053 User Manual
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Page 11 of 21 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.
Page 12 of 21 Original Honda S2000 ECU Pinout This pinout is for the original wiring harness on the Honda S2000 showing the corresponding pin on the AEM EMS through the adapter harness. Please note: Connector C is not present in the original wiring harness. Pin Name AEM EMS pin location Tapped or intercepted? A1 Knock sensor (Knock 1 on EMS) C3 tapped A2 Ignition power 2 -- -- A3 Ignition power 1 -- -- A4 Power ground 2 (Power ground on EMS) B10 tapped A5 Power ground 1 (Power ground on EMS) B2 Relay pins 2 & 4 tapped A6 Camshaft position sensor (T2 on EMS) C20 tapped A7 Crankshaft position sensor (T1 on EMS) C8 tapped A8 Logic Ground 2 -- -- A9 Logic Ground 1 -- -- A10 AF sensor heater -- -- A11 -- -- -- A12 -- -- -- A13 Ignition Coil 4 (Coil 4 on EMS) C14 intercepted A14 Ignition Coil 3 (Coil 3 on EMS) C13 intercepted A15 Ignition Coil 2 (Coil 2 on EMS) C12 intercepted A16 Ignition Coil 1 (Coil 1 on EMS) C4 intercepted A17 -- -- -- A18 Vehicle Speed Sensor (T3 on EMS) C23 tapped A19 -- -- -- A20 Sensor Voltage 2 -- -- A21 Sensor Voltage 1 -- -- A22 -- -- -- A23 Sensor Ground 2 (Sensor ground on EMS) C18 tapped A24 Sensor Ground 1 (Sensor ground on EMS) C7 tapped A25 Accelerator Pedal Position B -- -- A26 Accelerator Pedal Position A -- -- A27 -- -- -- A28 AF sensor 1 signal (-) -- -- A29 -- -- -- A30 MAP signal (MAP on EMS) C17 tapped A31 AF sensor 1 signal (+) -- -- Wire view of original ECU connector
Page 13 of 21 Pin Name AEM EMS pin location Tapped or intercepted? B1 -- (HS 4 on EMS) D4 intercepted B2 Injector 4 (Injector 4 on EMS) B5 intercepted B3 Injector 3 (Injector 3 on EMS) B4 intercepted B4 Injector 2 (Injector 2 on EMS) B3 intercepted B5 Injector 1 (Injector 1 on EMS) B11 intercepted B6 VTEC solenoid valve (HS 1 on EMS) B12 intercepted B7 -- -- -- B8 Coolant Temperature signal 1 (CLT on EMS) C26 tapped B9 -- -- -- B10 Alternator L signal -- -- B11 VTEC oil pressure switch B10 (stock ECU side) intercepted B12 -- -- -- B13 Alternator FR signal -- -- B14 -- -- -- B15 Engine mount control solenoid valve -- -- B16 -- -- -- B17 Intake Air Temperature signal (AIT on EMS) C25 tapped B18 Alternator Control signal (LS 3 on EMS) -- -- B19 Throttle Actuator signal SEFD -- -- B20 Throttle Actuator signal SEDF -- -- B21 Evap Emission Canister purge valve -- -- B22 -- -- -- B23 -- -- -- B24 -- -- -- Pin Name AEM EMS pin location Tapped or intercepted? D1 Cruise Control set switch -- -- D2 -- -- -- D3 -- -- -- D4 Cruise Control main switch -- -- D5 -- -- -- D6 -- -- -- D7 Cruise Control resume switch -- -- D8 Brake pedal position switch -- -- D9 Cruise Control clutch signal -- -- D10 -- -- -- D11 -- -- -- D12 -- -- -- D13 -- -- -- D14 -- -- -- D15 Throttle Actuator Relay -- -- D16 -- -- -- D17 -- -- -- Wire view of original ECU connector
Page 14 of 21 Pin Name AEM EMS pin location Tapped or intercepted? E1 Engine Coolant Temperature sensor 2 -- -- E2 -- -- -- E3 Logic Ground 3 -- -- E4 Sensor Ground 3 -- -- E5 Sensor Voltage 3 -- -- E6 -- -- -- E7 Main Relay control -- -- E8 AF sensor heater relay -- -- E9 Ignition signal (ignition signal on EMS) Relay pin 1 & B1 tapped E10 -- -- -- E11 CAN High -- -- E12 Radiator Fan control (LS 8 on EMS) A20 intercepted E13 SEFMJ multiplex communication -- -- E14 Fuel Tank Pressure sensor -- -- E15 Electrical Load detector -- -- E16 Power Steering Load detector -- -- E17 Fuel Pump relay (LS 1 on EMS) A15 intercepted E18 A/C Compressor clutch relay A17 intercepted E19 Evap Canister vent shut valve -- -- E20 Secondary O2 sensor signal -- -- E21 Secondary O2 sensor heater -- -- E22 Brake Pedal position switch -- -- E23 -- -- -- E24 CAN Low -- -- E25 Engine speed pulse -- -- E26 Vehicle speed out -- -- E27 Immobilizer code -- -- E28 A/C switch signal -- -- E29 Service Check signal -- -- E30 Write Enable signal -- -- E31 -- -- -- Wire view of original ECU connector
Page 15 of 21
Application Notes for EMS P/N 30-6053
F22C1
Make: Acura/Honda Description Function Pin Model: S2000 Spare Injector Drivers: Injector 5 D1 Years Covered: 2006-2008 Spare Injector Drivers: Injector 6 B19 Engine Displacement: 2.2L Spare Injector Drivers: Injector 7 D2 Engine Configuration: Inline 4 Spare Injector Drivers: Injector 8 B16 Firing Order: 1-3-4-2 Spare Injector Drivers: Injector 9 A12 or A13 N/A, S/C or T/C: N/A Spare Injector Drivers: Injector 10 C11 Load Sensor Type: MAP Spare Injector Drivers: Injector 11 A14 MAP Min: 0.32V @ -13.9 psi Spare Injector Drivers: Injector 12 A10 MAP Max: 4.84V @ 10.94 psi Spare Coil Drivers: Coil 7 A13* # Coils: 4 smart coils with built in ignitors Spare Coil Drivers: Coil 8 A22* Ignition driver type: 0-5V Falling Edge trigger Boost Solenoid: PW 2 D16 # of Injectors: 4 (Inj 1-4) Spare PWM Freq Driver: PW 1 B15 or B23 Factory Injectors: 360 cc/min saturated EGT 1 Location: EGT 1 A5 Factory Inj Resistors: No EGT 2 Location: EGT 2 D7 Injection Mode: Sequential EGT 3 Location: EGT 3 A30 Knock Sensors used: 1 (Knock 1) EGT 4 Location: EGT 4 C5 Lambda Sensors used: Spare 0-5V Input Channel: ADCR03 A29 Spare 0-5V Input Channel: ADCR11 C6 1 (O2 # 1, wideband sensor required,
original O2 sensor used only for
original check engine light)
Spare 0-5V Input Channel: ADCR13 C24 Idle Control: Stock electronic throttle Spare 0-5V Input Channel: ADCR14 D8 Main Relay Control: Controlled by stock ECU Spare Low Side Output Driver: Low side 1 A2 Crank Pickup Type: Hall Effect (3-wire) Spare Low Side Output Driver: Low side 2 C1 Crank Teeth/Cycle: 24 plus 2 Spare Low Side Output Driver: Low side 4 A6 Cam Pickup Type: Hall Effect (3-wire) Spare Low Side Output Driver: Low side 5 A4 Cam Teeth/Cycle: 4 plus 1 Spare Low Side Output Driver: Low side 7 A19 Transmissions Offered: Manual Spare Low Side Output Driver: Low side 10 A18 Trans Supported: Manual Spare Low Side Output Driver: Low side 12 A8 Drive Options: RWD Spare Low Side Output Driver: Idle 2 A28 Supplied Connectors: N/A Spare Low Side Output Driver: Idle 4 D5 AEM Extension/patch harness 30-2986C (from vehicle harness) Spare Low Side Output Driver: Idle 6 B17 AEM Plug/pin kit 35-2610 Spare Low Side Output Driver: Idle 8 B25 VTEC High Side Driver: High side 1 B12 Spare High Side Driver: High side 2 B7 Spare High Side Driver: Idle 1 D3 Spare High Side Driver: Idle 3 A25 Spare High Side Driver: Idle 5 B8 Spare High Side Driver: Idle 7 B18 Spare Switch Input: Switch 1 A32 Spare Switch Input: Switch 2 D11 Spare Switch Input: Switch 3 D12 Spare Switch Input: Switch 5 C10 A/C Switch Input: Switch 6 A27
Wire View of AEM EMS
WARNING:
*The Coil 7 and Coil 8 outputs are intended only for use with ignitors (or smart coils with built-in
ignitors). Do not connect these pins directly to 2-wire direct-fire ignition coils (a.k.a. ‘dumb’ coils);
doing so will damage your EMS and void your warranty.
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. Connecting 12V power to the switch input pins may
damage your EMS and void your warranty.
Page 16 of 21 Connection Diagram for EMS P/N 30-6053 Please note that the following pinout is for the AEM EMS and not the original Honda S2000 wiring harness. PnP Means the Plug and Play system comes with this configured for proper operation of this device. Is still available for reassignment by the end user. Available Means the function is not currently allocated and is available for use Dedicated Means the location is fixed and cannot be changed Not used Means that the AEM EMS does not use this pin location for this application Pin AEM adapter harness pinout (gray connectors wired to vehicle wiring harness) AEM EMS 30-6053 EMS I/O EMS pin description A1 -- Coolant dash signal Output Available, provides coolant temperature gauge signal for Honda instrument cluster A2 Fuel pump Low side 1 Output PnP for fuel pump activation A3 -- Low side 3 Output Available, switched ground, 1.5A max A4 VTEC stock computer oil pressure switch Low side 5 Output PnP for VTEC oil pressure switch A5 -- EGT 1 Input Available, exhaust gas temperature sensor number 1, jumper set for 0-5V input A6 -- Low side 4 Output Available, switched ground, 1.5A max A7 -- Sensor ground Output Available, filtered ground for sensors A8 -- Low side 12 Output Available, switched ground, 1.5A max A9 -- Vehicle Speed (T3) Input Available, vehicle speed sensor (connected to C23) A10 -- Injector 12 Output Available, pulse width modulated switched ground, 1.5A max A11 VTEC ground for stock computer Filtered ground Output Dedicated, used to emulate the VTEC solenoid A12 -- Injector 9 Output Available, pulse width modulated switched ground, 1.5A max A13 -- Coil 7 Output Available, 0-5V falling edge signal (only available for use with 3-wire smart coils) A14 -- Injector 11 Output Available, pulse width modulated switched ground, 1.5A max A15 -- Low side 11 Output Available, switched ground, 1.5A max (connected to A16) A16 -- Low side 11 Output Available, switched ground, 1.5A max (connected to A15) Wire View of AEM EMS
Page 17 of 21 Connection Diagram for EMS P/N 30-6053 Pin AEM adapter harness pinout (gray connectors wired to vehicle wiring harness) AEM EMS 30-6053 EMS I/O EMS pin description A17 -- Low side 6 Output Available, switched ground, 1.5A max A18 -- Low side 10 Output Available, switched ground, 1.5A max A19 -- Low side 7 Output Available, switched ground, 1.5A max A20 Radiator fan control Low side 8 Output PnP for radiator fan control (cannot be set higher than stock ECU temperature of 95°F/35°C unless tapped wire at stock ECU is disconnected) A21 -- +12V power Output Available, filtered +12V power A22 -- Coil 8 Output Available, 0-5V falling edge signal (only available for use with 3-wire smart coils) A23 -- O2 #2 Input Available, 0-5V air-fuel ratio sensor number 2 signal A24 -- +12V start signal Input Not used A25 -- Idle 3 Output Available, switched ground, 1.5A max A26 -- Switch 5 Input Available, switched ground input signal number 5 A27 -- Switch 6 Input Available, switched ground input signal number 5 A28 -- Idle 2 Output Available, switched +12V power, 1.5A max A29 -- MAF Input Available, 0-5V mass air flow sensor signal A30 -- EGT 3 Input Available, exhaust gas temperature sensor number 3, jumper set for 0-5V input A31 -- Sensor ground Output Available, filtered ground for sensors A32 -- Switch 1 Input Available, switched ground input signal number 1 Wire View of AEM EMS
Page 18 of 21 Connection Diagram for EMS P/N 30-6053 Pin AEM adapter harness pinout (gray connectors wired to vehicle wiring harness) AEM EMS 30-6053 EMS I/O EMS pin description B1 Ignition signal +12V switched Input Dedicated, +12V power for AEM EMS B2 Power ground 1 Power ground Input Dedicated, power ground for AEM EMS B3 Injector 2 Injector 2 Output PnP for injector number 2 B4 Injector 3 Injector 3 Output PnP for injector number 3 B5 Injector 4 Injector 4 Output PnP for injector number 4 B6 -- PW 1i Output Available, pulse width modulated switched ground, 1.5A max (inverted signal to PW 1) B7 -- High side 2 Output Available, switched +12V power, 1.5A max B8 -- Idle 5 Output Available, switched ground, 1.5A max B9 -- +12V switched Output Available, switched +12V power (powered on when B1 is on) B10 Power ground 2 Power ground Input Dedicated, power ground for AEM EMS B11 Injector 1 Injector 1 Output PnP for injector number 1 B12 VTEC solenoid valve High side 1 Output PnP for VTEC engagement signal B13 -- Coil 1 Output Available, 0-5V falling edge signal number 1 (connected to C4) B14 -- -- -- Not used B15 -- PW 1 Output Available, pulse width modulated switched ground, 1.5A max B16 -- Injector 8 Output Available, pulse width modulated switched ground, 1.5A max B17 -- Idle 6 Output Available, switched +12V power, 1.5A max B18 -- Idle 7 Output Available, switched ground, 1.5A max B19 -- Injector 6 Output Available, pulse width modulated switched ground, 1.5A max B20 -- Power ground Output Available, power ground B21 -- +12V switched Input Available, switched +12V power B22 -- Power ground Output Available, power ground B23 -- PW 1 Output Available, pulse width modulated switched ground, 1.5A max B24 -- Knock 2 Input Available, 0-5V knock sensor signal (connected to C22) B25 -- Idle 8 Output Available, switched +12V power, 1.5A max Wire View of AEM EMS
Page 19 of 21 Connection Diagram for EMS P/N 30-6053 Pin AEM adapter harness pinout (gray connectors wired to vehicle wiring harness) AEM EMS 30-6053 EMS I/O EMS pin description C1 -- Low side 2 Output Available, switched ground, 1.5A max C2 -- -- -- Not used C3 Knock sensor Knock 1 Input PnP for knock sensor signal (depin from stock ECU if more sensitivity is required) C4 Ignition coil 1 Coil 1 Output PnP for ignition coil 1 (connected to B13) C5 -- EGT 4 Input Available, exhaust gas temperature sensor number 4, jumper set for 0-5V input C6 -- ADCR11 Input Available, 0-5V sensor signal C7 Sensor ground 1 Sensor ground Output Dedicated, filtered ground for sensors C8 Crankshaft position sensor Crank sensor (T1) Input Dedicated, crank position sensor signal C9 -- Timing ground Output Available, filtered ground for speed sensors (T1-T4) C10 -- Switch 4 Input Available, switched ground input signal number 4 C11 -- Injector 10 Output Available, pulse width modulated switched ground, 1.5A max C12 Ignition coil 2 Coil 2 Output PnP for ignition coil 2 C13 Ignition coil 3 Coil 3 Output PnP for ignition coil 3 C14 Ignition coil 4 Coil 4 Output PnP for ignition coil 4 C15 -- O2 #2 Input Available, 0-5V air-fuel ratio sensor number 2 signal C16 -- O2 #1 Input Available, 0-5V air-fuel ratio sensor number 1 signal C17 MAP signal MAP Input PnP for manifold absolute pressure sensor signal C18 Sensor ground 2 Sensor ground Output Dedicated, filtered ground for sensors C19 -- +5V sensor power Output Available, +5V sensor power C20 Camshaft position sensor Cam sensor (T2) Input Dedicated, cam position sensor signal C21 -- Timing ground Output Available, filtered ground for speed sensors (T1-T4) C22 -- Knock 2 Input Available, 0-5V knock sensor signal (connected to B24) C23 Vehicle speed sensor Vehicle speed (T3) Input Dedicated, vehicle speed sensor signal (connected to A9) C24 -- ADCR13 Input Available, 0-5V sensor signal, 100kΩ pull up resistor to 5V C25 Intake air temperature sensor AIT Input PnP for intake air temperature sensor signal C26 Coolant temperature sensor Coolant Input PnP for coolant temperature sensor signal C27 Throttle position sensor (located in wiring harness, not stock ECU) TPS Input PnP for throttle position sensor signal C28 -- +5V sensor power Output Available, +5V sensor power C29 -- Spare speed (T4) Input Available, 0-5V speed sensor signal C30 -- Timing ground Output Available, filtered ground for speed sensors (T1-T4) C31 -- Timing ground Output Available, filtered ground for speed sensors (T1-T4) Wire View of AEM EMS
Page 20 of 21 Connection Diagram for EMS P/N 30-6053 Pin AEM adapter harness pinout (gray connectors wired to vehicle wiring harness) AEM EMS 30-6053 EMS I/O EMS pin description D1 -- Injector 5 Output Available, pulse width modulated switched ground, 1.5A max D2 -- Injector 7 Output Available, pulse width modulated switched ground, 1.5A max D3 -- Idle 1 Output Available, switched ground, 1.5A max D4 -- High side 4 Output Available, switched +12V power D5 -- Idle 4 Output Available, switched +12V power, 1.5A max D6 Relay pin 3 +5V filtered power Input Dedicated, EMS shut off D7 -- EGT 2 Input Available, exhaust gas temperature sensor number 2, jumper set for 0-5V input D8 -- ADCR14 Input Available, 0-5V sensor signal, 100kΩ pull up resistor to 5V D9 -- Sensor ground Output Available, filtered ground for sensors D10 -- CAN1H -- Dedicated, CAN1 high side D11 -- Switch 2 Input Available, switched ground input signal number 2 D12 -- Switch 3 Input Available, switched ground input signal number 3 D13 -- High side 3 Output Available, switched +12V power, 1.5A max D14 -- CAN1L -- Dedicated, CAN1 low side D15 -- Baro volts Input Available, barometric pressure sensor signal D16 -- PW 2 Output Available, boost solenoid pulse-width modulated switched ground Wire View of AEM EMS Relay pinout Pin Relay pinout Destination Relay I/O Relay pin description 1 +12V switched input Stock ECU E9 Input Dedicated 2 Ground Stock ECU A5 Input Dedicated 3 Ground to +5V line AEM EMS D6 Output Dedicated, used to power AEM EMS off properly 4 Ground Stock ECU A5 Input Dedicated 5 -- -- -- Not used Wire view of relay