PCM Harness Resistance
Disconnect PCM harness connectors. Check for open or short circuits between PCM harness connector and component harness connector. See PCM CIRCUITS table. See WIRING DIAGRAMS
. If harness is open or shorted, repair as necessary.
PCM CIRCUITS (M/T OR 3-SPEED A/T)
| Connector/Terminal No. |
Wire Color |
Function |
| A/1 |
BRN/RED |
Fuel Tank Sensor Input |
| A/2 |
RED/BLU |
HO2S No. 1 Signal |
| A/3 |
YEL/RED |
Fuel Level Input |
| A/4 |
RED/YEL |
ECT Sensor Input |
| A/5 |
GRY/RED |
Reference Voltage |
| A/6 |
RED/BLK |
IAT Sensor Input |
| A/7 |
***** |
Not Used |
| A/8 |
***** |
Not Used |
| A/9 |
GRY/BLK |
MAF Sensor Input |
| A/10 |
YEL |
HO2S No. 2 Signal |
| A/11 |
GRY |
TP Sensor Input |
| A/12 |
***** |
Not Used |
| A/13 |
BRN/YEL |
MAP Sensor Input |
| A/14 |
BLU/WHT |
CTP Switch Signal |
| A/15 |
***** |
Not Used |
| A/16 |
***** |
Not Used |
| B/1 |
BLK/ORG |
Ground |
| B/2 |
BLK/ORG |
Ground |
| B/3 |
WHT |
CMP Sensor |
| B/4 |
***** |
Not Used |
| B/5 |
YEL/RED |
Fuel Gauge Ground |
| B/6 |
GRN/WHT |
EVAP Canister Vent Valve Control |
| B/7 |
GRN/BLU |
EVAP Tank Pressure Control Solenoid Vacuum Valve Control |
| B/8 |
***** |
Not Used |
| B/9 |
PNK/WHT |
HO2S Sensor No. 2 Control |
| B/10 |
***** |
Not Used |
| B/11 |
RED |
Fuel Injector No. 1 Control |
| B/12 |
LT GRN/BLK |
IAC Valve Control |
| B/13 |
WHT/GRN |
Fuel Injector No. 3 Control |
| B/14 |
BLK/GRN |
PCM Ground |
| B/15 |
BRN |
Sensor Ground |
| B/16 |
ORG/BLK |
Ignition Reference High (CKP Sensor) |
| B/17 |
WHT/BLU |
Ignition Reference Low (CKP Sensor) |
| B/18 |
***** |
Not Used |
| B/19 |
***** |
Not Used |
| B/20 |
***** |
Not Used |
| B/21 |
GRN/WHT |
Brake Light Switch (A/T Only) |
| B/22 |
PPL/GRN |
Serial Data Output |
| B/23 |
PNK |
HO2S Sensor No. 1 Heater Control |
| B/24 |
LT GRN/RED |
Fuel Injector No. 2 Control |
| B/25 |
LT GRN/YEL |
EVAP Canister Purge Valve Control |
| B/26 |
WHT/BLK |
Fuel Injector No. 4 Control |
| C/1 |
WHT |
Battery Voltage |
| C/2 |
BLK/YEL |
Starter Signal |
| C/3 |
PPL |
Duty Cycle Output |
| C/4 |
ORN |
Ignition Control Module Output |
| C/5 |
PNK |
Fuel Pump Relay Control |
| C/6 |
BLU/RED |
Test Switch Signal |
| C/7 |
YEL |
VSS Input |
| C/8 |
***** |
Not Used |
| C/9 |
YEL/BLK |
A/C ON Signal |
| C/10 |
BLU |
Main Relay Control |
| C/11 |
***** |
Not Used |
| C/12 |
BLU/BLK |
Ignition Voltage |
| C/13 |
BLU/BLK |
Ignition Voltage |
| C/14 |
PPL/YEL |
MIL Control |
| C/15 |
GRN/WHT |
EGR Solenoid Vacuum Control |
| C/16 |
WHT/YEL |
TCC Relay Control |
| C/17 |
BLU/ORG |
Diagnostic Request Signal |
| C/18 |
GRN/RED |
EGR By-Pass Valve Control |
| C/19 |
BLU/ORG |
Power Steering Pressure Signal |
| C/20 |
PNK/WHT |
ABS Idle-Up Signal |
| C/21 |
***** |
Not Used |
| C/22 |
BLK/RED |
Crank Signal |
PCM CIRCUITS (4-SPEED A/T)
| Connector/Terminal No. |
Wire Color |
Function |
| A/1 |
WHT |
VSS Signal High |
| A/2 |
ORG/GRN |
Overdrive Switch Signal |
| A/3 |
ORG/WHT |
4WD Low Signal |
| A/4 |
ORG |
Shift Mode Signal |
| A/5 |
RED/YEL |
Lights ON Signal |
| A/6 |
WHT/BLK |
O/D OFF Indicator |
| A/7 |
PNK |
Power Indicator |
| A/8 |
GRN/RED |
Shift Solenoid No. 2 Control |
| A/9 |
BLK |
VSS Signal Low |
| A/10 |
GRN/BLU |
L Position Signal |
| A/11 |
GRN/RED |
2 Position Signal |
| A/12 |
GRN |
D Position Signal |
| A/13 |
ORG/BLU |
N Position Signal |
| A/14 |
RED |
R Position Signal |
| A/15 |
GRN/ORG |
Shift Solenoid No. 1 Control |
| A/16 |
GRN/YEL |
TCC Solenoid Control |
| B/1 |
BLU |
Main Relay Control |
| B/2 |
BLK/ORG |
Ground |
| B/3 |
BLK/BLU |
Ignition Voltage |
| B/4 |
WHT |
Battery Voltage |
| B/5 |
PPL |
Duty Check Output |
| B/6 |
ORG |
Ignition Control Module Output |
| B/7 |
GRN/WHT |
EGR Solenoid Vacuum Valve Control |
| B/8 |
***** |
Not Used |
| B/9 |
PNK |
Fuel Pump Control |
| B/10 |
PNK/BLU |
TP Input |
| B/11 |
RED |
Fuel Injector No. 1 Control |
| B/12 |
LT GRN/BLK |
IAC Valve Control |
| B/13 |
WHT/GRN |
Fuel Injector No. 3 Control |
| B/14 |
BLK/ORG |
Ground |
| B/15 |
BLK/GRN |
Ground |
| B/16 |
BLU/BLK |
Ignition Voltage |
| B/17 |
PPL/GRN |
Serial Data Output |
| B/18 |
***** |
Not Used |
| B/19 |
PNK |
HO2S No. 1 Heater Control |
| B/20 |
***** |
Not Used |
| B/21 |
***** |
Not Used |
| B/22 |
***** |
Not Used |
| B/23 |
PPL/YEL |
MIL Control |
| B/24 |
GRN/RED |
Fuel Injector No. 2 Control |
| B/25 |
GRN/YEL |
EVAP Canister Purge Valve Control |
| B/26 |
WHT/BLK |
Fuel Injector No. 4 Control |
| C/1 |
***** |
Not Used |
| C/2 |
BLK/YEL |
Starter Signal |
| C/3 |
WHT |
CMP Sensor Input |
| C/4 |
YEL |
VSS Input |
| C/5 |
YEL/BLK |
A/C ON Signal |
| C/6 |
BLU/YEL |
Diagnostic Request Signal |
| C/7 |
***** |
Not Used |
| C/8 |
RED/BLU |
HO2S No. 1 Signal |
| C/9 |
GRY/BLK |
MAF Signal |
| C/10 |
GRY/RED |
Reference Voltage |
| C/11 |
BRN |
Sensor Ground |
| C/12 |
***** |
Not Used |
| C/13 |
GRN/RED |
Brake Signal |
| C/14 |
PNK/GRN |
O/D Cut Signal |
| C/15 |
BLU/WHT |
CTP Switch Signal |
| C/16 |
BLU/ORG |
Power Steering Pressure Signal |
| C/17 |
PNK/WHT |
ABS Idle-Up Signal |
| C/18 |
BLU/RED |
Test Switch Signal |
| C/19 |
RED/BLK |
IAT Signal |
| C/20 |
GRY |
TP Input |
| C/21 |
RED/YEL |
ECT Input |
| C/22 |
***** |
Not Used |
| D/1 |
YEL |
HO2S No. 2 Signal |
| D/2 |
BRN/YEL |
MAP Input |
| D/3 |
YEL/RED |
Fuel Level Input |
| D/4 |
YEL/RED |
Fuel Gauge Ground |
| D/5 |
GRN/WHT |
EVAP Canister Vent Valve Control |
| D/6 |
PNK/WHT |
HO2S No. 2 Heater Control |
| D/7 |
BRN/WHT |
Fuel Tank Pressure Input |
| D/8 |
ORG/BLK |
Ignition Reference High |
| D/9 |
WHT/BLU |
Ignition Reference Low |
| D/10 |
***** |
Not Used |
| D/11 |
GRN/RED |
EGR By-Pass Valve Control |
| D/12 |
GRN/BLU |
EVAP Tank Pressure Control Solenoid Vacuum Valve Control |