Inspection And Verification: Material
| Item | Specification |
|---|---|
| High Performance DOT 3 Motor Vehicle Brake Fluid PM-1-C (US); CPM-1-C (Canada) |
WSS-M6C62-A or WSS-M6C65-A1 |
The first indication that something may be wrong in the brake system is a change in the feeling through the brake pedal. The brake warning indicator in the Instrument Cluster (IC) and the brake fluid level in the brake master cylinder reservoir are also indicators of system concerns.
If a wheel is locked and the vehicle must be moved, open a bleeder screw at the locked wheel to let out enough fluid to relieve the pressure. Close the bleeder screw. This bleeding operation may release the brakes, but will not correct the concern. If this does not relieve the locked wheel condition, repair the locked components before proceeding.
Inspect all hoses and connections. All unused vacuum connectors should be capped. Make sure hoses and their connections are correctly secured and in good condition with no holes, soft or collapsed areas.
- Verify the customer concern.
- For parking brake concerns, refer to PARKING BRAKE & ACTUATION .
- For ABS concerns, refer to VEHICLE DYNAMIC SYSTEMS .
- For adjustable pedal concerns, refer to HYDRAULIC BRAKE ACTUATION .
- For all other concerns, continue with the next step.
- Visually inspect for obvious signs of mechanical or electrical damage.
- Visually inspect the suspension system and tires for obvious signs of wear or damage.
- For suspension system concerns, refer to SUSPENSION SYSTEM - GENERAL INFORMATION .
- For tire concerns, refer to WHEELS & TIRES .
VISUAL INSPECTION CHARTMechanical Electrical - Brake fluid level and condition
- Brake master cylinder
- Brake master cylinder reservoir
- Brake booster
- Brake booster check valve
- Brake booster vacuum hose
- Brake hoses and tubes
- Brake caliper, guide pins and anchor plate
- Brake disc
- Brake pads
- Brake pedal, bracket and booster linkage
- Aftermarket modifications
- Parking brake switch
- Brake fluid level switch
- Wiring, terminals or connectors
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the cause is not visually evident, GO to SYMPTOM CHART - BRAKE SYSTEM or GO to SYMPTOM CHART - NVH .