PINPOINT TEST G532451p10 : BRAKE CANCEL SWITCH CIRCUIT TEST (PETROL VEHICLES)
Pinpoint Tests
PINPOINT TEST G532451p10 : BRAKE CANCEL SWITCH CIRCUIT TEST (PETROL VEHICLES)
G532451t38 : CHECK THE BRAKE CANCEL SWITCH FUNCTION, WITH THE BRAKE PEDAL RELEASED
1. Turn the ignition switch to the OFF position.
2. Disconnect the brake cancel switch connector CR77.
3. Measure the resistance between the brake cancel switch connector CR77, pin 01 component side and the brake cancel switch connector CR77, pin 02 component side.
- Is the resistance greater than 5 ohms?
-> YES
INSTALL a new brake cancel switch. TEST the system for normal operation.
-> NO
GO to Pinpoint Test G532451t39.
G532451t39 : CHECK THE BRAKE CANCEL SWITCH FUNCTION, WITH THE BRAKE PEDAL DEPRESSED
1. Measure the resistance between the brake cancel switch connector CR77, pin 01 component side and the brake cancel switch connector CR77, pin 02 component side.
- Is the resistance greater than 10,000 ohms?
-> YES
GO to Pinpoint Test G532451t33.
-> NO
INSTALL a new brake cancel switch. TEST the system for normal operation.
G532451t33 : CHECK THE BRAKE CANCEL SWITCH GROUND CIRCUIT FOR OPEN CIRCUIT
1. Measure the resistance between the brake cancel switch connector CR77, pin 01 (B) and GROUND.
- Is the resistance greater than 5 ohms?
-> YES
REPAIR the circuit between the brake cancel switch connector CR77, pin 01 (B) and GROUND. TEST the system for normal operation.
-> NO
GO to Pinpoint Test G532451t34.
G532451t34 : CHECK THE ECM TO BRAKE CANCEL SWITCH CIRCUIT FOR OPEN CIRCUIT
1. Disconnect the ECM connector, EC300.
2. Measure the resistance between the ECM connector EC300, pin 40 (U) and brake cancel switch connector CR77, pin 02 (U).
- Is the resistance greater than 5 ohms?
-> YES
REPAIR the circuit between the ECM connector EC300, pin 40 (U) and brake cancel switch connector CR77, pin 02 (U). TEST the system for normal operation.
-> NO
No fault is indicated with the brake cancel switch or circuit. To continue the diagnostics, return to the Symptom Chart.