ECM Inputs and Outputs at Connector A (□) (44P)
NOTE: Standard battery voltage is about 12 V.
Terminal number
Wire color
Terminal name
Description
Signal
4
PUR
FANL (RADIATOR FAN CONTROL)
Drives radiator fan relay
With radiator fan running: about 0 V
With radiator fan stopped: battery voltage
5
GRY
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
GRN
MRLY (PGM-FI MAIN RELAY 1)
Drives PGM-FI main relay 1
Power source for DTC memory
With ignition switch ON (II): about 0 V
With ignition switch OFF: battery voltage
7
LT GRN
STS (STARTER SWITCH SIGNAL)
Detects starter switch signal
With starter switch ON (III): battery voltage
With starter switch OFF: about 0 V
8
ORN
IGP (POWER SOURCE)
Power source for ECM circuit
With ignition switch ON (II): battery voltage
9
BLK
SG6 (SENSOR GROUND)
Sensor ground
Less than 1.0 V at all times
10
WHT
STSCNTL (STARTER RELAY CONTROL)
Drives starter cut relay
Turn the ignition switch ON (II): battery voltage
13
LT BLU
STRLD (STARTER SIGNAL LOAD)
Detects starter signal
With starter switch ON (III): battery voltage
14
RED
ACC (A/C COMPRESSOR CLUTCH RELAY)
Drives A/C compressor clutch relay
With compressor ON: about 0 V
With compressor OFF: battery voltage
15
BRN
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
16
LT GRN
ACPD (A/C PRESSURE SENSOR)
Detects A/C pressure sensor signal
With A/C switch ON: about 1.7−4.8 V (depending on A/C pressure)
17
YEL
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 0.5 V
18
PUR
APSB (ACCELERATOR PEDAL POSITION (APP) SENSOR B)
Detects APP sensor B signal
With ignition switch ON (II) and accelerator pedal pressed: about 2.3 V
With ignition switch ON (II) and accelerator pedal released: about 0.25 V
19
RED
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 (4.0 V momentarily)
21
PNK
SUBRLY (PGM-FI SUBRELAY)
Drives PGM-FI subrelay
With ignition switch ON (II): about 0 V