| Diagnosis and Testing Refer to Wiring Diagrams Section 501-20A, for schematic and connector information. Worldwide Diagnostic System (WDS) Inspection and Verification - Verify the customer concern.
- Visually inspect for obvious signs of mechanical or electrical damage.
Visual Inspection Chart | Mechanical | Electrical | | | - Wiring harness
- Electrical connector(s)
- Safety belt buckle switch
- Restraints control module
| - If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If DTC B2433 is displayed by WDS.
REFER to: Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) - Vehicles Built From: 06/2004 (501-20B Supplemental Restraint System, Diagnosis and Testing).
- If no DTCs are displayed relating to the symptom, refer to the Symptom Chart.
Symptom Chart Symptom Chart | Symptom | Possible Sources | Action | | The safety belt indicator does not illuminate | * Driver safety belt buckle switch. * Circuit(s). * Restraints Control Module (RCM). | * | | The safety belt indicator is illuminated continuously | * Driver safety belt buckle switch. * Circuit(s). * RCM. | * | | PINPOINT TEST A : THE SAFETY BELT INDICATOR DOES NOT ILLUMINATE | | TEST CONDITIONS | DETAILS/RESULTS/ACTIONS | | A1: CHECK THE SAFETY BELT BUCKLE SWITCH CIRCUIT FOR OPEN CIRCUIT | WARNING:To avoid accidental deployment, the RCM backup power supply must be depleted. Wait at least one minute after disconnecting the battery ground cable(s) before commencing any repair or adjustment to the supplemental restraint system (SRS), or any component(s) adjacent to the SRS sensors. Failure to follow these instructions may result in personal injury. | | | 1 Deactivate the SRS. | | | 2 Unfasten the driver safety belt. | | | 3 Disconnect Restraints Control Module (RCM) C423. | | | 4 Measure the resistance between the RCM C423 pin 25, circuit 8-JA54 (WH), harness side and C423 pin 34, circuit 9-JA54 (BN), harness side. | | | Is the resistance less than 5 ohms? Yes INSTALL a new RCM.
REFER to: Restraints Control Module (RCM) (501-20B Supplemental Restraint System, Removal and Installation).
TEST the system for normal operation. No | | A2: CHECK CIRCUIT 8-JA54 (WH) FOR OPEN CIRCUIT | | | 1 Disconnect Safety Belt Buckle Switch C335. | | | 2 Measure the resistance between the driver seat C30 pin 14, circuit 8-JA54 (WH), harness side and the RCM C423 pin 25, circuit 8-JA54 (WH), harness side. | | | Is the resistance less than 5 ohms? Yes No REPAIR circuit 8-JA54 (WH). TEST the system for normal operation. | | A3: CHECK CIRCUIT 9-JA54 (BN) FOR OPEN CIRCUIT | | | 1 Measure the resistance between the drivers seat C30 pin 13, circuit 9-JA54 (BN), harness side and the RCM C423, pin 34 (BN) harness side. | | | Is the resistance less than 5 ohms? Yes INSTALL a new driver safety belt buckle and pretensioner.
REFER to: Safety Belt Buckle and Pretensioner (501-20A Safety Belt System, Removal and Installation).
TEST the system for normal operation. No REPAIR circuit 9-JA54 (BN). TEST the system for normal operation. | | PINPOINT TEST B : THE SAFETY BELT INDICATOR IS ILLUMINATED CONTINUOUSLY. | | TEST CONDITIONS | DETAILS/RESULTS/ACTIONS | | B1: CHECK THE DRIVER SAFETY BELT SWITCH | WARNING:To avoid accidental deployment, the RCM backup power supply must be depleted. Wait at least one minute after disconnecting the battery ground cable(s) before commencing any repair or adjustment to the SRS, or any component(s) adjacent to the SRS sensors. Failure to follow these instructions may result in personal injury. | | | 1 Deactivate the SRS. | | | 2 Ignition switch in position 0. | | | 3 Disconnect Safety Belt Buckle Switch C335. | | | 4 Ignition switch in position II. | | | Is the safety belt indicator illuminated? Yes No INSTALL a new safety belt buckle and pretensioner.
REFER to: Safety Belt Buckle and Pretensioner (501-20A Safety Belt System, Removal and Installation).
TEST the system for normal operation. | | B2: CHECK CIRCUIT 8-JA54 (WH) AND FOR SHORT TO GROUND | | | 1 Ignition switch in position 0. | | | 2 Disconnect RCM C423. | | | 3 Measure the resistance between the RCM C423 pin 25, circuit 8-JA54 (WH), harness side and ground. | | | Is the resistance greater than 10,000 ohms? Yes INSTALL a new RCM.
REFER to: Restraints Control Module (RCM) (501-20B Supplemental Restraint System, Removal and Installation).
TEST the system for normal operation. No REPAIR circuit 8-JA54. TEST the system for normal operation. | |
