Page 646 of 4284

Symptom:
ACCESSORY POWER OUTPUT #1 OPEN
When Monitored and Set Condition:
ACCESSORY POWER OUTPUT #1 OPEN
When Monitored: Continuously with the ignition on.
Set Condition: The FCM has detected an open in the Accessory Relay control circuit.
POSSIBLE CAUSES
FRONT CONTROL MODULE
FUSE & RELAY CENTER INTERNAL MALFUNCTION
ACCESSORY RELAY
FRONT CONTROL MODULE
INTERMITTENT CONDITION
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, erase the current Front Control Module DTC's.
Turn the ignition off, wait 10 seconds then turn the ignition on.
With the DRBIIIt, read the current Front Control Module DTC's.
Does the DRBIIItdisplay both the ACCESSORY POWER OUTPUT OPEN trouble
codes?All
Ye s®Go To 2
No®Go To 3
2 Turn the ignition off.
Disconnect the Accessory Relay from the Fuse & Relay Center.
Connect a known good relay to the Accessory Relay location in the Fuse & Relay
Center.
Turn the ignition on.
With the DRBIIIt, erase the current Front Control Module DTC's.
Turn the ignition off, wait 10 seconds then turn the ignition on.
With the DRBIIIt, read the current Front Control Module DTC's.
Does the DRBIIItdisplay both the ACCESSORY POWER OUTPUT OPEN trouble
codes?All
Ye s®Replace the Fuse and Relay Center.
Perform BODY VERIFICATION TEST - VER 1.
No®Replace the original Accessory Relay.
Perform BODY VERIFICATION TEST - VER 1.
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INTELLIGENT POWER MODULE
Page 647 of 4284
TEST ACTION APPLICABILITY
3 Turn the ignition on.
With the DRBIIIt, read the current Front Control Module DTC's.
Does the DRBIIItdisplay the ACCESSORY POWER OUTPUT 1 OPEN trouble code?All
Ye s®Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 4
4 Turn the ignition on.
With the DRBIIIt, read the current Front Control Module DTC's.
Does the DRBIIItdisplay the ACCESSORY POWER OUTPUT #2 OPEN trouble
code?All
Ye s®Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
No®This symptom represents an internal malfunction in the Front
Control Module. The condition that caused this symptom is
currently not present.
Perform BODY VERIFICATION TEST - VER 1.
618
INTELLIGENT POWER MODULE
ACCESSORY POWER OUTPUT #1 OPEN ÐContinued
Page 648 of 4284

Symptom:
ACCESSORY POWER OUTPUT #1 SHORTED TO BATTERY
When Monitored and Set Condition:
ACCESSORY POWER OUTPUT #1 SHORTED TO BATTERY
When Monitored: Continuously with the ignition on.
Set Condition: The FCM has detected a short to battery voltage in the Accessory Relay
control circuit.
POSSIBLE CAUSES
FRONT CONTROL MODULE
FUSE & RELAY CENTER INTERNAL MALFUNCTION
ACCESSORY RELAY
FRONT CONTROL MODULE
INTERMITTENT CONDITION
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, erase the current Front Control Module DTC's.
Turn the ignition off, wait 10 seconds then turn the ignition on.
With the DRBIIIt, read the current Front Control Module DTC's.
Does the DRBIIItdisplay both ACCESSORY POWER OUTPUT SHORTED TO
BATTERY trouble codes?All
Ye s®Go To 2
No®Go To 3
2 Turn the ignition off.
Disconnect the Accessory Relay from the Fuse & Relay Center.
Connect a known good relay to the Accessory Relay location in the Fuse & Relay
Center.
Turn the ignition on.
With the DRBIIIt, erase the current Front Control Module DTC's.
Turn the ignition off, wait 10 seconds then turn the ignition on.
With the DRBIIIt, read the current Front Control Module DTC's.
Does the DRBIIItdisplay both ACCESSORY POWER OUTPUT SHORTED TO
BATTERY trouble codes?All
Ye s®Replace the Fuse and Relay Center.
Perform BODY VERIFICATION TEST - VER 1.
No®Replace the original Accessory Relay.
Perform BODY VERIFICATION TEST - VER 1.
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INTELLIGENT POWER MODULE
Page 649 of 4284
TEST ACTION APPLICABILITY
3 Turn the ignition on.
With the DRBIIIt, read the current Front Control Module DTC's.
Does the DRBIIItdisplay the ACCESSORY POWER OUTPUT #1 SHORTED TO
BATTERY trouble code?All
Ye s®Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 4
4 Turn the ignition on.
With the DRBIIIt, read the current Front Control Module DTC's.
Does the DRBIIItdisplay the ACCESSORY POWER OUTPUT #2 OPEN trouble
code?All
Ye s®Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
No®This symptom represents an internal malfunction in the Front
Control Module. The condition that caused this symptom is
currently not present.
Perform BODY VERIFICATION TEST - VER 1.
620
INTELLIGENT POWER MODULE
ACCESSORY POWER OUTPUT #1 SHORTED TO BATTERY ÐContinued
Page 650 of 4284

Symptom:
ACCESSORY POWER OUTPUT #2 OPEN
When Monitored and Set Condition:
ACCESSORY POWER OUTPUT #2 OPEN
When Monitored: Continuously with the ignition on.
Set Condition: The FCM has detected an open in the Accessory Relay control circuit.
POSSIBLE CAUSES
FRONT CONTROL MODULE
FUSE & RELAY CENTER INTERNAL MALFUNCTION
ACCESSORY RELAY
FCM
INTERMITTENT CONDITION
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, erase the current Front Control Module DTC's.
Turn the ignition off, wait 10 seconds then turn the ignition on.
With the DRBIIIt, read the current Front Control Module DTC's.
Does the DRBIIItdisplay both ACCESSORY POWER OUTPUT OPEN trouble
codes?All
Ye s®Go To 2
No®Go To 3
2 Turn the ignition off.
Disconnect the Accessory Relay from the Fuse & Relay Center.
Connect a known good relay to the Accessory Relay location in the Fuse & Relay
Center.
Turn the ignition on.
With the DRBIIIt, erase the current Front Control Module DTC's.
Turn the ignition off, wait 10 seconds then turn the ignition on.
With the DRBIIIt, read the current Front Control Module DTC's.
Does the DRBIIItdisplay both ACCESSORY POWER OUTPUT OPEN trouble
codes?All
Ye s®Replace the Fuse and Relay Center.
Perform BODY VERIFICATION TEST - VER 1.
No®Replace the Accessory Relay.
Perform BODY VERIFICATION TEST - VER 1.
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INTELLIGENT POWER MODULE
Page 651 of 4284
TEST ACTION APPLICABILITY
3 Turn the ignition on.
With the DRBIIIt, read the current Front Control Module DTC's.
Does the DRBIIItdisplay the ACCESSORY POWER OUTPUT #1 OPEN trouble
code?All
Ye s®Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 4
4 Turn the ignition on.
With the DRBIIIt, read the current Front Control Module DTC's.
Does the DRBIIItdisplay the ACCESSORY POWER OUTPUT #2 OPEN trouble
code?All
Ye s®Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
No®This symptom represents an internal malfunction in the Front
Control Module. The condition that caused this symptom is
currently not present.
Perform BODY VERIFICATION TEST - VER 1.
622
INTELLIGENT POWER MODULE
ACCESSORY POWER OUTPUT #2 OPEN ÐContinued
Page 652 of 4284

Symptom:
ACCESSORY POWER OUTPUT #2 SHORTED TO BATTERY
When Monitored and Set Condition:
ACCESSORY POWER OUTPUT #2 SHORTED TO BATTERY
When Monitored: Continuously with the ignition on.
Set Condition: The FCM has detected a short to battery voltage in the Accessory Relay
control circuit.
POSSIBLE CAUSES
FRONT CONTROL MODULE
FUSE & RELAY CENTER INTERNAL MALFUNCTION
ACCESSORY RELAY
FRONT CONTROL MODULE
INTERMITTENT CONDITION
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, erase the current Front Control Module DTC's.
Turn the ignition off, wait 10 seconds then turn the ignition on.
With the DRBIIIt, read the current Front Control Module DTC's.
Does the DRBIIItdisplay both ACCESSORY POWER OUTPUT SHORTED TO
BATTERY trouble codes?All
Ye s®Go To 2
No®Go To 3
2 Turn the ignition off.
Disconnect the Accessory Relay from the Fuse & Relay Center.
Connect a known good relay to the Accessory Relay location in the Fuse & Relay
Center.
Turn the ignition on.
With the DRBIIIt, erase the current Front Control Module DTC's.
Turn the ignition off, wait 10 seconds then turn the ignition on.
With the DRBIIIt, read the current Front Control Module DTC's.
Does the DRBIIItdisplay both ACCESSORY POWER OUTPUT SHORTED TO
BATTERY trouble codes?All
Ye s®Replace the Fuse and Relay Center.
Perform BODY VERIFICATION TEST - VER 1.
No®Replace the original Accessory Relay.
Perform BODY VERIFICATION TEST - VER 1.
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INTELLIGENT POWER MODULE
Page 653 of 4284
TEST ACTION APPLICABILITY
3 Turn the ignition on.
With the DRBIIIt, read the current Front Control Module DTC's.
Does the DRBIIItdisplay the ACCESSORY POWER OUTPUT #1 SHORTED TO
BATTERY trouble code?All
Ye s®Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 4
4 Turn the ignition on.
With the DRBIIIt, read the current Front Control Module DTC's.
Does the DRBIIItdisplay the ACCESSORY POWER OUTPUT #2 SHORTED TO
BATTERY trouble code?All
Ye s®Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
No®This symptom represents an internal malfunction in the Front
Control Module. The condition that caused this symptom is
currently not present.
Perform BODY VERIFICATION TEST - VER 1.
624
INTELLIGENT POWER MODULE
ACCESSORY POWER OUTPUT #2 SHORTED TO BATTERY ÐContinued