Scheme 5
Scheme 6
Scheme 7
Scheme 8
| Callout | Component Name |
|---|---|
| 1 | Remote Control Door Lock Receiver (RCDLR) |
| 2 | Remote Control Door Lock Receiver (RCDLR) Connector |
| 3 | Body Control Module (BCM) |
| 4 | Automatic Transmission Shift Lock Actuator Connector |
| 5 | Automatic Transmission Shift Lock Actuator |
| 6 | Park Brake Switch |
| 7 | Park Brake Switch Connector |
Body Control Module (BCM) C1 Connector End Connector Part Information 12177194 6-Way F Metri-Pack 150 Series (WH) Pin Wire Color Circuit No. Function A BN/WH 230 Instrument Panel Lamps Dimming Control B - - Not Used C OG 4040 Battery Positive Voltage D OG 1732 Inadvertant Courtesy Lamps Supply Voltage E BN/WH 230 Instrument Panel Lamps Dimming Control F OG 2240 Battery Positive Voltage
Body Control Module (BCM) C2 Connector End Connector Part Information 12110088 24-Way F Micro-Pack 100 Series (L-GY) Pin Wire Color Circuit No. Function A1 - - Not Used A2 WH 2283 12 Volt Reference A3 TN/BK 254 Door Unlock Relay Control A4 PK/WH 1970 Headlamp Low Beam Relay Control A5 D-GN/WH 1317 Fog Lamp Relay Control A6 GY/BK 255 Door Lock Relay Control A7 L-GN 1391 Driver Door Unlock Relay Control A8-A10 - - Not Used A11 RD/WH 812 12 Volt Reference A12 OG 1140 Battery Positive Voltage B1 BK/WH 1969 Headlamp High Beam Relay Control B2 WH 1080 Park Lamp Relay Control B3 - - Not Used B4 L-GN/BK 592 DRL Relay Control B5 - - Not Used B6 BK/WH 751 Ground B7 BK 1835 Security System Sensor Low Reference B8 - - Not Used B9 BK 28 Horn Relay Control B10 - - Not Used B11 GY 705 5 Volt Reference B12 L-GN 1037 BCM Class 2 Serial Data
Body Control Module (BCM) C3 Connector End Connector Part Information 12160778 24-Way F Micro-Pack 100 Series (BN) Pin Wire Color Circuit No. Function A1-A3 - - Not Used A4 WH 278 Ambient Light Sensor Signal A5 - - Not Used A6 YE 1836 Security System Sensor Signal A7 L-GN 1011 Remote Radio Control Signal A8 L-BU 1134 Park Brake Switch Signal A9 OG 192 Front Fog Lamp Switch Signal A10 D-GN 113 Windshield Wiper Switch On Signal A11-A12 - - Not Used B1 YE 710 Class 2 Serial Data Secondary B2 GY/BK 308 Park Lamp Switch On Signal B3-B5 - - Not Used B6 BK/WH 751 Signal Ground B7 - - Not Used B8 OG/BK 2090 Instrument Panel Lamps Dimming Control B9 L-GN 11 Head Lamp Dimmer Switch Signal B10-B12 - - Not Used
Body Control Module (BCM) C4 Connector End Connector Part Information 12110206 24-Way F Micro-Pack 100 Series (L-BU) Pin Wire Color Circuit No. Function A1 L-GN 80 Key In Ignition Switch Signal A2 YE 307 Headlamp Switch Flash To Pass Signal A3 PK 1390 Off/Run/Crank Voltage A4 PK 39 Ignition 1 Voltage A5 BK/WH 746 Right Front Door Ajar Switch Signal A6 - - Not Used A7 L-BU 1134 Park Brake Switch Signal A8-A11 - - Not Used A12 WH 103 Headlamp Switch HeadlampsOn Signal B1-B2 - - Not Used B3 YE 343 Accessory Voltage B4 GY/BK 745 Left Front Door Ajar Switch Signal B5 L-BU 195 Door Lock Control B6 GY/BK 2226 Instrument Panel Lamps Dimmer Switch Low Reference B7 BK 279 Ambient Light Sensor Low Reference B8-B9 - - Not Used B10 WH 194 Door Unlock Control B11-B12 - - Not Used
Body Control Module (BCM) C5 Connector End Connector Part Information 12177195 6-Way F Metri-Pack 150 Series (BK) Pin Wire Color Circuit No. Function A-C - - Not Used D OG 2140 Battery Positive Voltage E GY/BK 690 Courtesy Lamp Supply Voltage F L-GN 24 Backup Lamp Supply Voltage
Begin the diagnosis of the body control system by performing the Diagnostic System Check for the system in which the customer concern is apparent. The Diagnostic System Check will direct you to the correct procedure for diagnosing the system and where the procedure is located.
Test Description
The numbers below refer to the step numbers on the diagnostic table.
- 6: This step tests for battery voltage on the signal circuits that are not required.
- 7: This step tests for no battery voltage on the required signal circuits.
- 8: If any ignition switch parameters that should be inactive in the present ignition switch position are active, 2 ignition switch signal circuits may be shorted together.
- 9: This step eliminates open circuits as the cause of the malfunction.
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Body Control System Schematics Connector End View Reference: Body Control System Connector End Views DEFINITION: Use this table if the vehicle power mode observed with a scan tool does not match the ignition switch position. IMPORTANT: Open the driver door and leave it open during this test. This will disable the retained accessory power (RAP) power mode and eliminate this power mode from the power mode parameter list. | |||
| 1 | Install a scan tool. Turn the ignition OFF. Observe the Class 2 Power Mode parameter under the Diagnostic Circuit Check menu with a scan tool. Does the displayed power mode parameter match the actual ignition switch position? | Go to Step 2 | Go to Step 6 |
| 2 | Turn the ignition switch to the UNLOCK position. Observe the Class 2 Power Mode parameter under the Diagnostic Circuit Check menu with a scan tool. Does the displayed power mode parameter match the actual ignition switch position? | Go to Step 3 | Go to Step 6 |
| 3 | Turn the ignition ON, with the engine OFF. Observe the Class 2 Power Mode parameter under the Diagnostic Circuit Check menu with a scan tool. Does the displayed power mode parameter match the actual ignition switch position? | Go to Step 4 | Go to Step 6 |
| 4 | IMPORTANT: The engine may start during this procedure. Turn the ignition OFF after verifying this power mode. Turn the ignition switch to the CRANK position. Observe the Class 2 Power Mode parameter under the Diagnostic Circuit Check menu with a scan tool. Does the displayed power mode parameter match the actual ignition switch position? | Go to Step 5 | Go to Step 6 |
| 5 | Turn the ignition switch to the ACCY position. Observe the Class 2 Power Mode parameter under the Diagnostic Circuit Check menu with a scan tool. Does the displayed power mode parameter match the actual ignition switch position? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 6 |
| 6 | IMPORTANT: The engine may start during this procedure. Turn the ignition OFF after verifying this power mode. Turn the ignition OFF. Disconnect the power mode master (PMM) module. Hold the ignition switch in the position that indicated the incorrect power mode. Test the PMM ignition switch inputs for voltage with a test lamp attached to a good ground. Refer to Body Control System Description and Operation . Is voltage present on only the inputs specified for the ignition switch position? | Go to Step 7 | Go to Step 8 |
| 7 | IMPORTANT: The engine may start during this procedure. Turn the ignition OFF after verifying this power mode. Hold the ignition switch in the position that indicated the incorrect power mode. Test the PMM ignition switch inputs for voltage with a test lamp attached to a good ground. Refer to Body Control System Description and Operation . Is voltage present every input specified for the ignition switch position? | Go to Step 11 | Go to Step 9 |
| 8 | Disconnect the ignition switch. Test the PMM ignition switch input circuits for a short to voltage. Refer to Testing for a Short to Voltage and Wiring Repairs in Wiring Systems. Test the PMM ignition switch circuits for a short between circuits. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 14 | Go to Step 10 |
| 9 | Disconnect the ignition switch. Test the PMM ignition switch input circuits for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 14 | Go to Step 10 |
| 10 | Inspect for poor connections and terminal tension at the harness connector of the ignition switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 14 | Go to Step 12 |
| 11 | Inspect for poor connections and terminal tension at the harness connector of the PMM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 14 | Go to Step 13 |
| 12 | Replace the ignition switch. Refer to Ignition Switch Replacement in Steering Wheel and Column. Did you complete the replacement? | Go to Step 14 | |
| 13 | IMPORTANT: After replacement of the PMM, perform the programming or setup procedure, if required. Replace the PMM. Refer to Control Module References .Did you complete the replacement? | Go to Step 14 | |
| 14 | IMPORTANT: The engine may start during this procedure. Turn the ignition OFF after verifying all power modes. Reconnect all disconnected components. Observe the Class 2 Power Mode parameter under the Diagnostic Circuit Check menu with a scan tool. Turn the ignition switch through all possible positions one at a time. Does the displayed power mode parameter match the actual ignition switch position? | System OK | Go to Step 1 |
| IMPORTANT |
|---|
| Open the driver door and leave it open during this test. This will disable the retained accessory power (RAP) power mode and eliminate this power mode from the power mode parameter list. |
| IMPORTANT |
|---|
| The engine may start during this procedure. Turn the ignition OFF after verifying this power mode. |
| IMPORTANT |
|---|
| The engine may start during this procedure. Turn the ignition OFF after verifying this power mode. |
| IMPORTANT |
|---|
| The engine may start during this procedure. Turn the ignition OFF after verifying this power mode. |
| IMPORTANT |
|---|
| After replacement of the PMM, perform the programming or setup procedure, if required. |
| IMPORTANT |
|---|
| The engine may start during this procedure. Turn the ignition OFF after verifying all power modes. |
Power Mode Mismatch