P1653
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Engine will not start.
CHECK ENGINE.
Misfiring can occur before trouble code is generated.
Main Relay Coil Circuit. Short to B+.
Fault symptoms
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Misfiring can occur before trouble code is generated.
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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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Crankshaft rotating. Output active.
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Fault criteria:
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Output voltage exceeding 2V for more than 0.5 s.
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Dependents:
System reaction to a fault:
OK report:
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Enable criteria fulfilled and fault criteria not fulfilled within 60 s.
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Fault handling:
(See section
Fault handling III, other emission-related components and functions
for more information.)
Diagnostic help
Fault diagnosis concerns electrical fault in connecting leads or in the relay.
Functions in the diagnostic tool related to the fault:
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Activate main relay output.
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See also description on activating under
"Activate" menu
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.
See
P1652
.
