Pinpoint Test 1: The Speed Control Is Inoperative
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PINPOINT TEST 1: THE SPEED CONTROL IS INOPERATIVE - HYBRID
Normal Operation
The PCM sends a signal through circuit (W) to the speed control switches, which passes through the clockspring. The return signal is sent to the PCM through circuit (G/BR) and the clockspring. When the brake pedal is applied, the stoplamp switch sends a voltage signal to the PCM on circuit (V/W) to deactivate the speed control if engaged.The speed control deactivator switch (part of the stoplamp switch) interrupts circuit (V/O) removing the voltage signal to the PCM when the brake pedal is applied. This is a redundant signal to the PCM.The ABS module monitors brake pressure and also receives the stoplamp switch input from the Smart Junction Box (SJB) along the High Speed Control Area Network (HS-CAN) bus. A fault in the ABS module can disable the speed control system.
Possible Causes
- Wiring, terminals or connectors
- PCM not configured for speed control
- Digital transmission range (TR) sensor
- Speed control deactivator switch
- Speed control switches
- Brake pedal position (BPP) switch
- ABS module
- PCM
Diagnostic Procedure
CAUTION:Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
