| DTC P0579:00 |
Cruise control multi-function input circuit range/performance problem |
| DETECTION CONDITION |
- The PCM monitors the input signal from the cruise control switch. If the input signal does not change for 120 s
, the PCM determines that the cruise control switch circuit has a malfunction.
Diagnostic support note
- This is a continuous monitor (other).
- The MIL does not illuminate.
- FREEZE FRAME DATA (Mode2)/Snapshot data is not available.
- The DTC is stored in the PCM memory.
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| POSSIBLE CAUSE |
- Clock spring connector or terminals malfunction
- Clock spring malfunction
- Cruise control switch malfunction
- Short to ground in wiring harness between clock spring terminal 2B and PCM terminal 1AQ
- PCM connector or terminals malfunction
- Short to power supply in wiring harness between the following terminals:
- Clock spring terminal 2B-PCM terminal 1AQ
- Clock spring terminal 2C-PCM terminal 1AN
- Open circuit in wiring harness between the following terminals:
- Clock spring terminal 2B-PCM terminal 1AQ
- Clock spring terminal 2C-PCM terminal 1AN
- PCM malfunction
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