Acura NSX 1997 Service Manual page 210

Main Menu Main Menu
Troubleshooting
Engine Control Module Terminal Arrangement
ECM CONNECTOR A (26P)
ECM CONNECTOR A (26P)
Terminal Wire
number color
1 BRN
2 RED
BLU
3
BLK/YEL
4
5 GRN/BLK
GRN
6
BLU
7
8 RED/BLU
9 GRY
LTGRN
10
11 PNK
12 BLK
13 YEL/BLK
14 YEL
BLK/RED
15
16 WHT/BLU
ORN
17
20 PNK/BLU
RED/YEL
21
22
GRN/RED
ORN/BLK
23
24 BRN
BLK
25
26 BRN/BLK
Table of Contents Table of Contents
Terminal name
INJ1 (No. 1 FUEL INJECTOR)
INJ2 (No. 2 FUEL INJECTOR)
INJ3 (No. 3 FUEL INJECTOR)
VSV (EVAP CONTROL CANIS-
TER VENT SHUT VALVE)
FLR1 (FUEL PUMP RELAY)
ESOL (EGR CONTROL
SOLENOID VALVE)
MIL (MALFUNCTION
INDICATOR LAMP)
ACC (A/C CLUTCH RELAY)
FS02SHTC (FRONT SEC-
ONDARY HEATED OXYGEN
SENSOR HEATER CONTROL)
RS02SHTC (REAR SEC-
ONDARY HEATED OXYGEN
SENSOR HEATER CONTROL)
IGN COIL1 (No. 1 IGNITION
COIL part of IGNITION
CONTROL MODULE)
PG1 (POWER GROUND)
IGP1 (POWER SOURCE)
INJ4 (No. 4 FUEL INJECTOR)
INJ5 (No. 5 FUEL INJECTOR)
INJ6 (No. 6 FUEL INJECTOR)
2WBS (EVAP BYPASS
SOLENOID VALVE)
IABCS (IAB CONTROL
SOLENOID VALVE)
PCS (EVAP PURGE CONTROL
SOLENOID VALVE)
FP02SHTC (FRONT PRIMARY
HEATED OXYGEN SENSOR
HEATER CONTROL)
RP02SHTC (REAR PRIMARY
HEATED OXYGEN SENSOR
HEATER CONTROL)
IGN COIL2 (No. 2 IGNITION
COIL part of IGNITION
CONTROL MODULE)
PG2 (POWER GROUND)
LG1 (LOGIC GROUND)
Description
Drives No. 1 fuel injector
Drives No. 2 fuel injector
Drives No. 3 fuel injector
Drives EVAP control canister vent
shut valve
Drives fuel pump relay
Drives EGR control solenoid
valve
Drives MIL
Drives A/C clutch relay
Drives front secondary heated
oxygen sensor heater
Drives rear secondary heated
oxygen sensor heater
Sends ignition pulse
Ground for the ECM power circuit
Power source for the ECM control
circuit
Drives No. 4 fuel injector
Drives No. 5 fuel injector
Drives No. 6 fuel injector
Drives EVAP bypass solenoid
valve
Drives IAB control solenoid valve
Drives EVAP purge control
solenoid valve
Drives front primary heated
oxygen sensor heater
Drives rear primary heated
oxygen sensor heater
Sends ignition pulse
Ground for the ECM power circuit
Ground for the ECM control
circuit
Wire side of female terminals
NOTE: Standard battery voltage is 12 V.
Signal
With engine running: pulses
With ignition switch ON (II):
battery voltage
0 V for two seconds after turning ignition
switch ON (II), then battery voltage
With EGR operating during driving with
fully warmed up engine: duty controlled
With EGR not operating: battery voltage
With MIL turned ON: 0 V
With MIL turned OFF: battery voltage
With compressor ON: 0 V
With compressor OFF: battery voltage
With ignition switch ON (II): battery
voltage
With fully warmed up engine running: 0 V
With ignition switch ON: battery voltage
With fully warmed up engine running:
pulses
With ignition switch ON (II): 0 V
With engine running: pulses
Less than 1.0 V at all times
With ignition switch ON (II): battery voltage
With ignition switch OFF: 0 V
With engine running: pulses
With ignition switch ON (II): battery
voltage
With engine speed below 4,800 rpm:
battery voltage
With engine speed above 4,800 rpm: 0 V
With engine running, engine coolant
below 153°F (67°C): battery voltage
With engine running, engine coolant
above 153°F (67°C): 0 V
With ignition switch ON (II): battery
voltage
With fully warmed up engine running: 0 V
With ignition switch ON (II): battery
voltage
With fully warmed up engine running: 0 V
With ignition switch ON (II): 0 V
With engine running: pulses
Less than 1.0 V at all times
Less than 1.0 V at all times