Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Test E

PINPOINT TEST E: DTC-P1572, AND P0703 BRAKE ON/OFF FAILURE


Test E1:






Test E2-E3:






Test E4-E5:






Test E5-E6:






Normal Operation
When the brake pedal is applied, the powertrain control module (PCM) will receive battery voltage from the brake pedal position (BPP) switch, deactivating the speed control system. A speed control deactivator switch opens when the brake is applied, deactivating the speed control.

Possible Causes
- circuit 10 (LG/RD) open, shorted to power or shorted to ground
- circuit 307 (BK/YE) open, shorted to power or shorted to ground
- circuit 810 (RD/LG) open, shorted to power or shorted to ground
- brake pedal position (BPP) switch
- speed control deactivator switch
- powertrain control module (PCM)
- speed control actuator