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P1653

Read the instructions below then start the fault diagnostic procedure.

Symptom: CHECK ENGINE goes on immediately. Engine will not start. Misfiring can occur before trouble code is generated.

P1653


Main Relay Coil Circuit. Short to B+.


Fault symptoms


CHECK ENGINE goes on immediately.

Engine will not start.

Misfiring can occur before trouble code is generated.


Conditions

The following conditions apply for this DTC:


Crankshaft rotating and output voltage exceeding 2 V when output active.

Condition fulfilled for 0.5 sec.


Diagnostic help

Fault diagnosis concerns electrical fault in connecting leads or in the relay.

Functions in the diagnostic tool related to the fault:


Activate main relay output.


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.