CONNECTOR IDENTIFICATION
| Connector | See Fig. |
|---|---|
| A/C Pressure Sensor | 5 |
| Brake Switch | 6 |
| Camshaft Position Sensor | 7 |
| Crankshaft Position Sensor | 8 |
| Data Link Connector | 9 |
| Downstream Oxygen Sensor | 10 |
| EGR Solenoid | 11 |
| Engine Coolant Temperature Sensor | 12 |
| EVAP Purge Solenoid | 13 |
| Fuel Pressure Sensor 3.3L CNG | 14 |
| Fuel Tank Module | 15 |
| Fuel Temp. Sensor 3.3L CNG | 16 |
| High Pressure Fuel Shutoff Solenoid 3.3L CNG | 17 |
| Idle Air Control Motor | 18 |
| Ignition Coil | 19 |
| Injector | 20 |
| Injector Wiring Harness (Injector Side) | 21 |
| Injector Wiring Harness (PCM Side) | 22 |
| Knock Sensor | 23 |
| Leak Detection Pump | 24 |
| Low Pressure Fuel Shutoff Solenoid 3.3L CNG | 25 |
| MAP Sensor | 26 |
| Output Speed Sensor 4-Speed A/T | 27 |
| Park/Neutral Switch 3-Speed A/T | 28 |
| Powertrain Control Module (PCM) | 29 |
| Radiator Cooling Fan Relay | 30 |
| Speed Control Servo | 31 |
| Throttle Position Sensor | 32 |
| Torque Converter Clutch Solenoid 3-Speed A/T | 33 |
| Transmission Control Module 4-Speed A/T | 34 |
| Transmission Range Sensor 4-Speed A/T | 35 |
| Upstream Oxygen Sensor | 36 |
| Vehicle Speed Sensor 3-Speed A/T | 45 |
CONNECTOR IDENTIFICATION DIRECTORY
Scheme 104
| Terminal | Wire Color | Function |
|---|---|---|
| 1 | Violet/White | 5-Volt Supply |
| 2 | Black/Light Blue | Sensor Ground |
| 3 | Not Used | Not Used |
| 4 | Dark Blue | Sensor Signal |
A/C PRESSURE SENSOR CONNECTOR TERMINAL IDENTIFICATION
Scheme 105
| Terminal | Wire Color | Function |
|---|---|---|
| 1 | White/Pink | Brake Switch Sense |
| 2 | Black | Ground |
| 3 | Yellow/Red | S/C On/Off Switch Output |
| 4 | Dark Blue/Red | S/C Brake Switch Output |
| 5 | White/Tan | Brakelight Switch Output |
| 6 | Pink/Dark Blue | Fused B+ |
BRAKE SWITCH CONNECTOR TERMINAL IDENTIFICATION
Scheme 106
| Terminal | Wire Color | Function |
|---|---|---|
| 1 | Orange | 8-Volt Supply |
| 2 | Black/Light Blue | Sensor Ground |
| 3 | Tan/Yellow | Sensor Signal |
CAMSHAFT POSITION SENSOR CONNECTOR TERMINAL ID
Scheme 107
| Terminal | Wire Color | Function |
|---|---|---|
| 1 | Orange | 8-Volt Supply |
| 2 | Black/Light Blue | Sensor Ground |
| 3 | Gray/Black | Sensor Signal |
CRANKSHAFT POSITION SENSOR CONNECTOR TERMINAL ID
Scheme 108
| Terminal | Wire Color | Function |
|---|---|---|
| 3 | Violet/Brown | CCD Bus (+) |
| 4 | Black/Light Green | Ground |
| 5 | Black/White | Ground |
| 6 | Light Green | SCI Receive |
| 7 | Pink | SCI Transmit |
| 11 | White/Black | CCD Bus (-) |
| 14 | Pink/Light Blue | SCI Receive (TCM) |
| 16 | Pink | Fused B+ |
DATA LINK CONNECTOR TERMINAL IDENTIFICATION
Scheme 109
| Terminal | Wire Color | Function |
|---|---|---|
| 1 | Black/Tan | Heater Ground |
| 2 | Dark Green/Orange | Auto Shutdown Relay Output |
| 3 | Black/Light Blue | Sensor Ground |
| 4 | Tan/White | Sensor Signal |
DOWNSTREAM OXYGEN SENSOR CONNECTOR TERMINAL ID
Scheme 110
| Terminal | Wire Color | Function |
|---|---|---|
| 1 | Gray/Yellow | EGR Solenoid Control |
| 2 | White/Black | Fused Ign. Switch Output |
EGR SOLENOID CONNECTOR TERMINAL IDENTIFICATION
Scheme 111
| Terminal | Wire Color | Function |
|---|---|---|
| 1 | Tan/Black | Sensor Signal |
| 2 | Black/Light Blue | Sensor Ground |
ENGINE COOLANT TEMP. SENSOR CONNECTOR TERMINAL ID
Scheme 112
| Terminal | Wire Color | Function |
|---|---|---|
| 1 | Pink/Black | EVAP Purge Solenoid Control |
| 2 | White/Black | Fused B+ |
EVAP PURGE SOLENOID CONNECTOR TERMINAL IDENTIFICATION
Scheme 113
| Terminal | Wire Color | Function |
|---|---|---|
| 1 | Black/Light Blue | Sensor Ground |
| 2 | Violet/White | 5-Volt Supply |
| 3 | Dark Green/Light Blue | Sensor Signal |
FUEL PRESSURE SENSOR CONNECTOR TERMINAL ID (CNG)
Scheme 114
| Terminal | Wire Color | Function |
|---|---|---|
| 1 | Dark Green/White | Fuel Pump Relay Output |
| 2 | Dark Blue | Fuel Level Sensor Signal |
| 3 | Not Used | Not Used |
| 4 | Black | Ground |
FUEL TANK MODULE CONNECTOR TERMINAL IDENTIFICATION
Scheme 115
| Terminal | Wire Color | Function |
|---|---|---|
| 1 | Tan/Pink | Sensor Signal |
| 2 | Black/Light Blue | Sensor Ground |
FUEL TEMP. SENSOR CONNECTOR TERMINAL ID (CNG)
Scheme 116
| Terminal | Wire Color | Function |
|---|---|---|
| 1 | Black | Solenoid Ground |
| 2 | Dark Green/White | Fuel Pump Relay Output |
HIGH PRESSURE FUEL SHUTOFF SOLENOID CONNECTOR TERMINAL IDENTIFICATION (CNG)
Scheme 117
| Terminal | Wire Color | Function |
|---|---|---|
| 1 | Violet/Black | IAC Motor No. 4 Driver |
| 2 | Brown/White | IAC Motor No. 3 Driver |
| 3 | Yellow/Black | IAC Motor No. 2 Driver |
| 4 | Gray/Red | IAC Motor No. 1 Driver |
IDLE AIR CONTROL MOTOR CONNECTOR TERMINAL ID
Scheme 118
| Terminal | Wire Color | Function |
|---|---|---|
| 1 | Red/Yellow | Ignition Coil No. 3 Driver |
| 2 | Gray | Ignition Coil No. 1 Driver |
| 3 | Dark Blue/Tan | Ignition Coil No. 2 Driver |
| 4 | Dark Green/Orange | Auto Shutdown Relay Output |
IGNITION COIL CONNECTOR TERMINAL ID
Scheme 119
| Terminal | Wire Color | Function |
|---|---|---|
| 1 | Dark Green/Orange | Auto Shutdown Relay Output |
| 2 (1) | White/Dark Blue | Injector No. 1 Driver |
| 2 (1) | Tan | Injector No. 2 Driver |
| 2 (1) | Yellow/White | Injector No. 3 Driver |
| 2 (1) | Light Blue/Brown | Injector No. 4 Driver |
| 2 (1) | Gray | Injector No. 5 Driver |
| 2 (1) | Brown/Dark Blue | Injector No. 6 Driver |
| (1) Connectors are same for all injectors except wire color at terminal No. 2. Listed are wire colors for specified injector driver at terminal No. 2. | ||
| (1) | Connectors are same for all injectors except wire color at terminal No. 2. Listed are wire colors for specified injector driver at terminal No. 2. |
INJECTOR CONNECTOR TERMINAL IDENTIFICATION
Scheme 120
| Terminal | Wire Color | Function |
|---|---|---|
| 1 | Dark Green/Orange | Auto Shutdown Relay Output |
| 2 | Violet/White | 5-Volt Supply |
| 3 | White/Dark Blue | Injector No. 1 Driver |
| 4 | Tan | Injector No. 2 Driver |
| 5 | Yellow/White | Injector No. 3 Driver |
| 6 | Light Blue/Brown | Injector No. 4 Driver |
| 7 | Dark Blue/Tan | Ignition Coil No. 2 Driver |
| 8 | Red/Yellow | Ignition Coil No. 3 Driver |
| 9 | Gray | Ignition Coil No. 1 Driver |
| 10 | Dark Green/Red | MAP Sensor Signal |
| 11 | Tan/Black | Coolant Temp. Sensor Signal |
| 12 | Gray | Injector No. 5 Driver |
| 13 | Brown/Dark Blue | Injector No. 6 Driver |
| 14 | Black/Light Blue | Sensor Ground |
INJECTOR WIRING HARNESS CONNECTOR (INJECTOR SIDE) TERMINAL IDENTIFICATION
Scheme 121
| Terminal | Wire Color | Function |
|---|---|---|
| 1 | Dark Green/Orange | Auto Shutdown Relay Output |
| 2 | Violet/White | 5-Volt Supply |
| 3 | White/Dark Blue | Injector No. 1 Driver |
| 4 | Tan | Injector No. 2 Driver |
| 5 | Yellow/White | Injector No. 3 Driver |
| 6 | Light Blue/Brown | Injector No. 4 Driver |
| 7 | Dark Blue/Tan | Ignition Coil No. 2 Driver |
| 8 | Red/Yellow | Ignition Coil No. 3 Driver |
| 9 | Gray | Ignition Coil No. 1 Driver |
| 10 | Dark Green/Red | MAP Sensor Signal |
| 11 | Tan/Black | Coolant Temp. Sensor Signal |
| 12 | Gray | Injector No. 5 Driver |
| 13 | Brown/Dark Blue | Injector No. 6 Driver |
| 14 | Black/Light Blue | Sensor Ground |
INJECTOR WIRING HARNESS CONNECTOR (PCM SIDE) TERMINAL IDENTIFICATION
Scheme 122
| Terminal | Wire Color | Function |
|---|---|---|
| 1 | Black/Light Blue | Sensor Ground |
| 2 | Dark Blue/Light Green | Sensor Signal |
KNOCK SENSOR CONNECTOR TERMINAL IDENTIFICATION
Scheme 123
| Terminal | Wire Color | Function |
|---|---|---|
| 1 | Yellow/Black | Pump Switch Sense |
| 2 | White/Dark Green | Solenoid Control |
| 3 | White/Black | Fused Ign. Switch Output |
| 4 | Not Used | Not Used |
LEAK DETECTION PUMP CONNECTOR TERMINAL IDENTIFICATION
RADIATOR COOLING FAN RELAY CONNECTOR TERMINAL IDENTIFICATION
| Terminal | Wire Color | Function |
|---|---|---|
| 1 | Black | Ground |
| 2 | Light Green/Dark Blue | Rad Fan Relay Control |
| 3 | Dark Green | Rad Fan Relay Output |
| 4 | Gray | Fused B+ |
RADIATOR COOLING FAN RELAY CONNECTOR TERMINAL ID
SPEED CONTROL SERVO CONNECTOR TERMINAL IDENTIFICATION
| Terminal | Wire Color | Function |
|---|---|---|
| 1 | Tan/Red | S/C Vacuum Solenoid Control |
| 2 | Light Green/Red | S/C Vent Solenoid Control |
| 3 | Dark Blue/Red | S/C Brake Switch Output |
| 4 | Black | Ground |
SPEED CONTROL SERVO CONNECTOR TERMINAL IDENTIFICATION
Scheme 124
| Terminal | Wire Color | Function |
|---|---|---|
| 1 | Black/Light Blue | Sensor Ground |
| 2 | Orange/Dark Blue | Sensor Signal |
| 3 | Violet/White | 5-Volt Supply |
THROTTLE POSITION SENSOR CONNECTOR TERMINAL ID
Scheme 125
Scheme 126
TEST NTC-4A - CHECKING COOLANT SENSOR CALIBRATION & RADIATOR FAN OPERATION
Note. Perform NTC-1A or NTC-3A before proceeding. Following test procedure is invalid if thermostat is stuck open, closed or removed.
- Check thermostat operation. If thermostat operates correctly, go to next step. If thermostat does not operate correctly, replace thermostat. Perform TEST VER-2A.
- Ensure ignition is on with engine off. Ensure engine coolant temperature is less than 160°F (71°C).
- Using scan tool, read Engine Coolant Temperature (ECT) sensor value. Using temperature probe, check temperature on cylinder block, near engine coolant temperature sensor. Engine coolant temperature sensor is located near thermostat housing and contains a Black/Light Blue wire and Tan/Black wire in the connector.
- If ECT sensor value on scan tool is not within 15°F (-9°C) of temperature reading on temperature probe, replace engine coolant temperature sensor. Perform TEST VER-2A. If ECT sensor value on scan tool is within 15°F (-9°C) of temperature reading on temperature probe, go to next step.
- Start engine and warm engine until engine coolant temperature is greater than 180°F (82°C). Using temperature probe, check temperature on cylinder block, near engine coolant temperature sensor. Compare ECT sensor value on scan tool with temperature reading on temperature probe.
- If ECT sensor value on scan tool does not stay within 15°F (-9°C) of temperature reading on temperature probe at all times, replace engine coolant temperature sensor. Perform TEST VER-2A. If ECT sensor value on scan tool stays within 15°F (-9°C) of temperature reading on temperature probe at all times, go to next step.
- Operate engine until radiator fan operates or engine coolant temperature reaches 220°F (104°C). If cooling fan does not operate, repair cooling fan as necessary. See appropriate SPECIFICATIONS & ELECTRIC COOLING FANS article in the ENGINE COOLING section. If cooling fan operates, engine coolant temperature sensor and radiator fan are operating properly. Test is complete.