ECM/PCM Inputs and Outputs at Connector A (□) (44P)
NOTE: Standard battery voltage is about 12 V.
Terminal number
Wire color
Terminal name
Description
Signal
4
GRN/RED
FANL (RADIATOR FAN CONTROL)
Drives radiator fan relay
With radiator fan running: about 0 V
With radiator fan stopped: battery voltage
5
YEL/RED
FANH (RADIATOR FAN CONTROL)
Drives A/C condenser fan relay
With A/C condenser fan running: about 0 V
With A/C condenser fan stopped: battery voltage
6
RED/BLK
MRLY (PGM-FI MAIN RELAY 1)
Drives PGM-FI main relay 1
With ignition switch ON (II): about 0 V
With ignition switch OFF: battery voltage
8
YEL/BLK
IGP (POWER SOURCE)
Power source for ECM/PCM circuit
With ignition switch ON (II): battery voltage
9
BLK
SG6 (SENSOR GROUND)
Sensor ground
Less than 0.5 V at all times
14
PUR
ACC (A/C COMPRESSOR CLUTCH RELAY)
Drives A/C compressor clutch relay
With compressor ON: about 0 V
With compressor OFF: battery voltage
15
GRY/BLK
IMOFPR (IMMOBILIZER FUEL PUMP RELAY)
Drives PGM-FI main relay 2 (FUEL PUMP)
About 0 V for 2 seconds after turning ignition switch ON (II), then battery voltage
With the engine running: about 0 V
16
BLU
ACPD (A/C PRESSURE SENSOR)
Detects A/C pressure sensor signal
With A/C switch ON: about 1.4−4.8 V (depending on A/C pressure)
17
YEL/BLK
APSA (ACCELERATOR PEDAL POSITION (APP) SENSOR A)
Detects APP sensor A signal
With ignition switch ON (II) and accelerator pedal pressed: about 4.7 V
With ignition switch ON (II) and accelerator pedal released: about 1.0 V
18
BLK
APSB (ACCELERATOR PEDAL POSITION (APP) SENSOR B)
Detects APP sensor B signal
With ignition switch ON (II) and accelerator pedal pressed: about 2.4 V
With ignition switch ON (II) and accelerator pedal released: about 0.5 V
19
YEL
VCC6 (SENSOR VOLTAGE)
Provides sensor reference voltage
With ignition switch ON (II): about 5.0 V
20
WHT
ETCSRLY (ELECTRONIC THROTTLE CONTROL SYSTEM (ETCS) CONTROL RELAY)
Drives electronic throttle control system (ETCS) control relay
With ignition switch ON (II): about 0 V
21
RED/YEL
SUBRLY (PGM-FI SUBRELAY)
Drives PGM-FI subrelay
With ignition switch ON (II): about 0 V
23
BLU/BLK
ELD (ELECTRICAL LOAD DETECTOR (ELD))
Detects ELD signal
With ignition switch ON (II): about 0.1−4.8 V (depending on electrical load)