P1663
Read the instructions below then
start the fault diagnostic procedure.
Symptom: CHECK ENGINE goes on after two driving cycles.
Engine torque too low.
Charge Air Control Valve Circuit. Short to B+.
Fault symptoms
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CHECK ENGINE goes on after two driving cycles.
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Conditions
The following conditions apply for this DTC:
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Engine running and main relay voltage exceeding 10 V.
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Output voltage exceeding 2 V when output is active.
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Conditions fulfilled within 10 periods that must fall within 60 sec. (it normally takes approx. 0.3 sec. to generate the diagnostic trouble code but sometimes it can take much longer).
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Diagnostic help
Fault diagnosis concerns an electrical fault in the connecting leads or in the valve.
Functions in the diagnostic tool related to the fault:
See also the description of activations,
, for more information.
Checking the wiring
Jiggle the wiring harness at several points and in different directions to detect intermittent breaks and short circuits. Observe the multimeter, diagnostic tool or test lamp during the check.
