Special tool
Digital multimeter 105-R0051 or equivalent | |
Electrical probe kit 29-011A |
Inspection and verification
1. Check the customer's complaint.
2. Perform a visual check for obvious signs of mechanical or electrical damage.
Visual Inspection Table
Electrical factors:
- Electrical circuit (And)
- Fuse
- Lamp (s)
- Loose, corroded or defective plug connector
3. If an obvious cause of the problem you identified or described by the client is found, eliminate it before proceeding to further actions (if possible).
4. If the cause of the problem is not visually obvious, check the symptom and refer to the Symptom Chart.
Symptom table
State |
Possible Causes |
Action |
• Stop lights don't work |
•Lamp (s) •Fuse (And) •Electrical circuit (And) • Stoplight switch |
• Go to PINPOINT TEST U |
•One or more brake lights not working |
•Lamp (s) •Electrical circuit (And) •Rear light assembly • Upper additional brake light - |
• Go to PINPOINT TEST V |
• Stop lights are constantly on |
•Chain (And) • Stoplight switch •ABS module •Powertrain control module (PCM) •Vehicle speed control module. |
• Go to PINPOINT TEST W |
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