Electrically Heated Systems; Defog Relay Control Ckt Shorted To Batt - Dodge ZB 2005 Service Manual

Symptom:

DEFOG RELAY CONTROL CKT SHORTED TO BATT

When Monitored and Set Condition:
DEFOG RELAY CONTROL CKT SHORTED TO BATT
When Monitored: With the ignition on and the EBL switch depressed.
Set Condition: This DTC will set when the A/C Heater Control Module senses excessive
current draw on the Rear Window Defogger Relay Control Circuit.
CHECK FOR HVAC DTC'S
REAR WINDOW DEFOGGER RELAY SHORTED TO BATTERY
REAR WINDOW DEFOGGER RELAY CONTROL CKT SHORTED TO BATTERY
A/C HEATER CONTROL MODULE
TEST
1 Turn the ignition on.
With the DRBIII , record and erase DTC's.
Depress the EBL switch on the A/C Heater Control Module.
With the DRBIII , read the active DTC's.
Does the DRBIII display DEFOG RELAY CONTROL CKT SHORTED TO BATT?
Yes → Go To 2
→ Using the wiring diagram/schematic as a guide, inspect the
No
2 Turn the ignition on.
With the DRBIII , record and erase DTC's.
Turn the ignition off.
Remove and install a known good relay in place of the Rear Window Defogger Relay.
Turn the ignition on.
Depress the EBL Switch on the A/C Heater Control Module.
With the DRBIII , read the active DTC's.
Does the DRBIII display DEFOG RELAY CONTROL CKT SHORTED TO BATT?
Yes → Go To 3
→ Replace the Rear Window Defogger Relay in accordance with the
No

ELECTRICALLY HEATED SYSTEMS

POSSIBLE CAUSES
ACTION
wiring and connectors. Refer to any Hotline letters or Technical
Service Bulletins that may apply.
Perform BODY VERIFICATION TEST - VER 1.
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
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APPLICABILITY
All
All