P1602
Read the instructions below then
start the fault diagnostic procedure.
Symptom: CHECK ENGINE.
Incorrect idle speed.
Cruise control inoperative.
Internal Control Module. Malfunction.
Fault symptoms
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Cruise control inoperative.
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On-Board Diagnostics
Type of diagnosis:
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Continuous. But interrupted when fault criteria fulfilled and will not restart until next driving cycle.
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Enable criteria:
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Ignition in ON position.
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Fault criteria:
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Stack error in processor 592.
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Dependents:
System reaction to a fault:
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Throttle control goes into limp-home mode. The limp-home solenoid will be activated 5 times in succession each time the ignition is turned on until the fault has been rectified and the trouble codes cleared.
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OK report:
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Accelerator pedal has been depressed at some time and then fully released. 120 s has expired since then without fault criteria being fulfilled.
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Fault handling:
(See “Fault diagnosis, general” for more information.)
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CHECK ENGINE goes on immediately and can be turned off only by clearing the trouble codes.
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Diagnostic help
Fault diagnosis concerns an internal fault in the control module.