ECM/PCM Inputs and Outputs at Connector A (□) (49P)
NOTE: Standard battery voltage is about 12 V.
Terminal number
Wire color
Terminal name
Description
Signal
  1 *1
WHT/RED
VBSOL (POWER SOURCE FOR SOLENOID VALVES)
Power source for solenoid valves
With ignition switch ON (II): battery voltage
3
WHT
CANH (CAN COMMUNICATION SIGNAL HIGH)
Sends communication signal
With ignition switch ON (II): pulses (about 2.5 V)
4
RED
CANL (CAN COMMUNICATION SIGNAL LOW)
Sends communication signal
With ignition switch ON (II): pulses (about 2.5 V)
5
GRN/RED
FANL (RADIATOR FAN CONTROL)
Drives radiator fan relay
With radiator fan running: about 0 V
With radiator fan stopped: battery voltage
6
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
7
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
9
YEL/BLK
IGP (POWER SOURCE)
Power source for ECM/PCM circuit
With ignition switch ON (II): battery voltage
10
BLK
SG6 (SENSOR GROUND)
Sensor ground
Less than 0.5 V at all times
15
PUR
ACC (A/C COMPRESSOR CLUTCH RELAY)
Drives A/C compressor clutch relay
With compressor ON: about 0 V
With compressor OFF: battery voltage
16
GRY/BLK
IMOFPR (IMMOBILIZER FUEL PUMP RELAY)
Drives PGM-FI main relay 2
About 0 V for 2 seconds after turning ignition switch ON (II), then battery voltage
With engine running: about 0 V

*1:
A/T