Dodge Ram Truck 1500-2500-3500. Manual — part 337
HEATED SYSTEMS
TABLE OF CONTENTS
page
page
HEATED GLASS - ELECTRICAL DIAGNOSTICS . . . 1
HEATED GLASS - SERVICE INFORMATION . . . . . . 6
HEATED MIRRORS - SERVICE INFORMATION . . 13
HEATED SEATS - SERVICE INFORMATION . . . . . 17
HEATED GLASS - ELECTRICAL DIAGNOSTICS
TABLE OF CONTENTS
page
page
HEATED GLASS - ELECTRICAL DIAGNOSTICS
DEFOG RELAY CONTROL CKT SHORTED
TO BATT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
HEATED GLASS - ELECTRICAL DIAGNOSTICS
DIAGNOSIS AND TESTING
DR/DH
HEATED SYSTEMS
8G - 1
DEFOG RELAY CONTROL CKT SHORTED TO BATT
8G - 2
HEATED GLASS - ELECTRICAL DIAGNOSTICS
DR/DH
DEFOG RELAY CONTROL CKT SHORTED TO BATT (CONTINUED)
For the Heated Mirror/Rear Defogger circuit diagram (Refer to 8 - ELECTRICAL/HEATED GLASS - SCHEMATICS
AND DIAGRAMS) .
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the Ignition on and the EBL (Rear Defogger) switch depressed.
•
Set Condition:
This DTC will set if the A/C Heater Control senses excessive current on the (C110) Defogger Relay Control
circuit.
Possible Causes
HVAC DTCS
RELAY SHORTED
(C110) DEFOGGER RELAY CONTROL CIRCUIT SHORTED TO BATTERY
A/C HEATER CONTROL SHORTED TO BATTERY
INTEGRATED POWER MODULE
Diagnostic Test
1.
CHECK FOR HVAC DTC’S
Turn the ignition on.
With the DRBIII
T
, record and erase DTCs.
Depress the EBL Switch on the A/C Heater Control.
With the DRBIII
T
, read the active DTCs.
Does the DRBIII
T
display DEFOG RELAY CONTROL CKT SHORTED TO BATT?
Yes
>> Go To 2
No
>> Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Refer to any Hotline
letters or Technical Service Bulletins that may apply.
Perform BODY VERIFICATION TEST - VER 1. (Refer to BODY VERIFICATION TEST - VER 1).
2.
CHECK THE RELAY FOR A SHORT TO BATTERY
Turn the ignition off.
One at a time remove and install a known good relay in place of the Heated Mirror Relay and then the EBL relay
if equipped.
NOTE: Do the following steps for each relay.
Turn the ignition on.
With the DRBIII
T
, record and erase DTCs.
Depress the EBL Switch on the A/C Heater Control.
With the DRBIII
T
, read the active DTCs.
Does the DRBIII
T
display DEFOG RELAY CONTROL CKT SHORTED TO BATT?
Yes
>> Go To 3
No
>> Replace the Relay that set the DTC.
Perform BODY VERIFICATION TEST - VER 1. (Refer to BODY VERIFICATION TEST - VER 1).
DR/DH
HEATED GLASS - ELECTRICAL DIAGNOSTICS
8G - 3
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