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Checking the pedal switches (manualgearbox)

Checking the pedal switches (manual gearbox)



1. Connect the BOB and check that about 12 V is present across pin D (4) of the Cruise Control connector and a good ground.

2. If the voltage is not OK, check that about 12 V is present across pin 2 of the brake pedal switch connector and a good ground.




If the voltage is OK, continue with point 6.

3. If the voltage is not OK, check that about 12 V is present across pin 1 of the clutch pedal switch and a good ground.


If the voltage is OK, continue with point 4.

If the voltage is not OK, measure the resistance across the load side of the fuse and pin 1 of the clutch pedal switch connector.

The resistance should be > 1 ohm.

If the resistance is > 1 ohm, check the wiring and rectify the fault.

4. Measure the resistance across pins 1 and 2 of the clutch pedal switch when the clutch pedal is depressed and also when it is not depressed.


If the resistance in the normal position (not depressed) is > 1 ohm, adjust the pedal switch or perhaps fit a new one.

Depressing the pedal breaks the circuit. If resistance can be measured in the circuit, fit a new pedal switch.

5. If the clutch pedal switch is OK, check the wiring for continuity or a short circuit by measuring the resistance across pin 1 of the clutch pedal switch connector and pin 2 of the brake pedal switch connector.


The resistance should be > 1 ohm.

6. Measure the resistance across pins 1 and 2 of the brake pedal switch when the brake pedal is depressed and also when it is not depresed.


If the resistance in the normal position (not depressed) is > 1 ohm, adjust the pedal switch or perhaps fit a new one.

Depressing the pedal breaks the circuit. If resistance can be measured in the circuit, fit a new pedal switch.

7. If the brake pedal switch is OK, check the wiring for continuity or a short circuit by measuring the resistance across pin 1 of the brake pedal switch connector and pin D (4) of the Cruise Control connector.


If the resistance is > 1 ohm, rectify the fault.