P1651
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Expert Gearhead
Joined: May 2006
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From: Sheboygan Wisconsin
P1651
P1651
Description
FAN 1 RELAY CONTROL CIRCUIT
Output Driver Modules (ODM) are used by PCM to turn on
current-driven devices needed to control various engine and transaxle
functions. Each ODM can control up to 7 outputs, including fan 1
relay, by supplying ground to device PCM is commanding on. ODMs can
diagnose each circuit individually.
Symptoms
You likely won't notice any drivability problems.
Causes
Solutions
Description
FAN 1 RELAY CONTROL CIRCUIT
Output Driver Modules (ODM) are used by PCM to turn on
current-driven devices needed to control various engine and transaxle
functions. Each ODM can control up to 7 outputs, including fan 1
relay, by supplying ground to device PCM is commanding on. ODMs can
diagnose each circuit individually.
Symptoms
You likely won't notice any drivability problems.
Causes
- An improper voltage level has been detected on fan 1 relay
driver circuit.
Solutions
- Check voltage at fan connection. Should be battery votage.
- Check fan 1 relay ignition feed fuse.
- Replace fan 1 relay.
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