Chrysler Town, Dodge Caravan. Manual — part 840
TEST
ACTION
APPLICABILITY
3
Turn the ignition on.
With the DRBIII
t, read the current Front Control Module DTC’s.
Does the DRBIII
t display the ACCESSORY POWER OUTPUT #1 SHORTED TO
BATTERY trouble code?
All
Yes
→ Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 4
4
Turn the ignition on.
With the DRBIII
t, read the current Front Control Module DTC’s.
Does the DRBIII
t display the ACCESSORY POWER OUTPUT #2 SHORTED TO
BATTERY trouble code?
All
Yes
→ 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.
596
IGNITION, POWER, ACCESSORY
ACCESSORY POWER OUTPUT 2 SHORT TO B+ —
Continued
Symptom:
CPA NOT ENGAGED
When Monitored and Set Condition:
CPA NOT ENGAGED
When Monitored:
Continuously with the ignition on.
Set Condition:
If the connector positive assurance lock is not fully engaged, the Front
Control Module will detect battery voltage on the B(+) Sense circuit. With voltage present,
the FCM determines that there is a poor connection at connector C5 of the Fuse and Relay
Center.
POSSIBLE CAUSES
FRONT CONTROL MODULE INTERNAL MALFUNCTION
FUSE AND RELAY CENTER INTERNAL MALFUNCTION
INTERMITTENT CONDITION
CONNECTOR POSITIVE ASSURANCE LOCK
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, erase the current Front Control Module DTC’s.
Turn the ignition off, wait 10 seconds then turn the ignition on.
With the DRBIII
t, read the current Front Control Module DTC’s.
Does the DRBIII
t display: CPA NOT ENGAGED?
All
Yes
→ Go To 2
No
→ The condition that caused this symptom is currently not present.
Inspect the related wiring harness for a possible intermittent
condition.
Perform BODY VERIFICATION TEST - VER 1.
2
Turn the ignition off.
Disconnect the Front Control Module from the Fuse and Relay Center.
Measure the voltage of the B(+) Sense circuit at the Fuse and Relay Center side of the
FCM connector.
Is the voltage above 10.0 volts?
All
Yes
→ Go To 3
No
→ Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
597
IGNITION, POWER, ACCESSORY
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Inspect connector C5 on the Fuse and Relay Center, ensure the connector lock is
properly seated into the connector.
Measure the voltage of the B(+) Sense circuit at the Fuse and Relay Center side of the
FCM connector.
Is the voltage above 10.0 volts?
All
Yes
→ Replace the Fuse and Relay Center.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Verify the Connector Positive Assurance lock is correctly seated.
Perform BODY VERIFICATION TEST - VER 1.
598
IGNITION, POWER, ACCESSORY
CPA NOT ENGAGED —
Continued
Symptom:
HORN INPUT STUCK
When Monitored and Set Condition:
HORN INPUT STUCK
When Monitored:
Continuously with the ignition on.
Set Condition:
The FCM has detected a fault in the Horn Switch Sense circuit.
POSSIBLE CAUSES
FRONT CONTROL MODULE INTERNAL MALFUNCTION
HORN SWITCH SENSE CIRCUIT SHORT TO GROUND
INTERMITTENT CONDITION
FUSE AND RELAY CENTER INTERNAL MALFUNCTION
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, erase the current Front Control Module DTC’s.
Turn the ignition off, wait 10 seconds then turn the ignition on.
With the DRBIII
t, read the current Front Control Module DTC’s.
Does the DRBIII
t display: HORN INPUT STUCK?
All
Yes
→ Go To 2
No
→ The condition that caused this symptom is currently not present.
Inspect the related wiring harness for a possible intermittent
condition.
Perform BODY VERIFICATION TEST - VER 1.
2
Turn the ignition off.
Disconnect connector C7 on the Fuse and Relay Center.
Measure the resistance between ground and the Horn Switch Sense circuit at the
Fuse and Relay Center C7 connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Repair the Horn Switch Sense circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
3
Turn the ignition off.
Disconnect the Front Control Module from the Fuse and Relay Center.
Measure the resistance between ground and the Horn Switch Sense circuit at the
Fuse and Relay Center side of the FCM connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Replace the Fuse and Relay Center.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
599
IGNITION, POWER, ACCESSORY
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