P1640
Read the instructions below then
start the fault diagnostic procedure.
Symptom: CHECK ENGINE lights up straight away.
Engine fails to start.
Possible misfiring before DTC is generated.
Main Relay Circuit. No Voltage to Control Module pin 1.
Fault symptoms
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CHECK ENGINE lights up straight away.
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Possible misfiring before DTC is generated.
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Conditions
The following conditions apply for this DTC:
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Crankshaft rotating and main relay voltage below 5 V for 1 second.
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Diagnostic help
Fault diagnosis concerns electrical faults in connecting cables or in the relay.
Diagnostic tool functions related to this fault are:
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Main relay voltage, in V.
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See also the description of readings under
Menu "Read Values"
for more information.
Check the wiring
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Note
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Jiggle the leads and in-line connectors at various points and in different directions to detect any intermittent breaks or short circuits in the wiring. Observe the multimeter, test lamp or diagnostic tool while doing this.
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