Operation CHARM: Car repair manuals for everyone.

P0703

Detection Condition:






Troubleshooting Hint:
Brake switch description
- A normally open type brake switch is used. Therefore when depress the brake pedal, the brake switch become ON (continuity), and release the brake pedal, the brake switch become OFF (no continuity).
- The brake switch signal uses the following controls.
- Idle air control
- Fuel injector control


Brake Switch Specification:






Diagnostic Procedure (Steps 1 - 5):