Dodge Ram. Manual — part 81
Symptom:
*RIGHT REAR DOOR AJAR CIRCUIT OPEN
POSSIBLE CAUSES
RIGHT REAR DOOR AJAR SWITCH
RIGHT REAR DOOR AJAR SWITCH GROUND CIRCUIT OPEN
RIGHT REAR DOOR AJAR SWITCH SENSE CIRCUIT OPEN
INSTRUMENT CLUSTER - RIGHT REAR DOOR AJAR OPEN
TEST
ACTION
APPLICABILITY
1
Disconnect the Right Rear Door Ajar Switch connector.
Connect a jumper wire between the Sense circuit and the Ground circuit.
With the DRBIII
t in Inputs/Outputs, read the RR DOOR AJAR SW state.
Does the DRBIII
t display CLOSED?
All
Yes
→ Replace the Right Rear Door Ajar Switch.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 2
2
Disconnect the Right Rear Door Ajar switch connector.
Using a 12-volt Test Light connected to 12-volts, probe the Ground circuit.
Does the test light illuminate brightly?
All
Yes
→ Go To 3
No
→ Repair the Right Rear Door Ajar Switch Ground circuit for an
open.
Perform BODY VERIFICATION TEST - VER 1.
3
Disconnect the Right Rear Door Ajar Switch harness connector.
Disconnect the Instrument Cluster C3 harness connector.
Measure the resistance of the Right Rear Door Ajar Switch Sense circuit between the
Instrument Cluster C1 connector and the Door Ajar Switch connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 4
No
→ Repair the Right Rear Door Ajar Switch Sense circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
4
If there are no possible causes remaining, view repair.
All
Repair
Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
321
DOOR AJAR
Symptom:
*RIGHT REAR DOOR AJAR CIRCUIT SHORT TO GROUND
POSSIBLE CAUSES
RIGHT REAR DOOR AJAR SWITCH SHORTED TO GROUND
RIGHT REAR DOOR AJAR SWITCH SENSE CIRCUIT SHORTED TO GROUND
INSTRUMENT CLUSTER - RIGHT REAR DOOR AJAR SHORTED
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t in Inputs/Outputs, read the RR DOOR AJAR SW state.
While monitoring the DRBIII
t, disconnect the Right Rear Door Ajar Switch harness
connector.
Did the Switch State change from CLOSED to OPEN?
All
Yes
→ Replace the Door Ajar Switch.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 2
2
Disconnect the Right Rear Door Ajar Switch harness connector.
Disconnect the Instrument Cluster C3 harness connector.
Using a 12-volt test light connected to 12-volts, probe the Right Rear Door Ajar
Switch Sense circuit and test for a short to ground.
Does the test light illuminate brightly?
All
Yes
→ Repair the Right Rear Door Ajar Switch Sense circuit for a short
to ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
3
If there are no possible causes remaining, view repair.
All
Repair
Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
322
DOOR AJAR
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 Rear Defogger switch depressed.
Set Condition:
This DTC will set when the A/C Heater Control Module senses excessive
current on the Defogger Relay Control circuit.
POSSIBLE CAUSES
CHECK FOR HVAC DTCS
RELAY SHORTED
A/C HEATER CONTROL MODULE SHORTED TO BATTERY
DEFOGGER RELAY CONTROL SHORTED TO BATTERY
INTEGRATED POWER MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, record and erase DTCs.
Depress the EBL Switch on the A/C Heater Control Module.
With the DRBIII
t, read the active DTCs.
Does the DRBIII
t display DEFOG RELAY CONTROL CKT SHORTED TO BATT?
All
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.
2
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 Module.
With the DRBIII
t, read the active DTCs.
Does the DRBIII
t display DEFOG RELAY CONTROL CKT SHORTED TO BATT?
All
Yes
→ Go To 3
No
→ Replace the Relay that set the DTC.
Perform BODY VERIFICATION TEST - VER 1.
323
ELECTRICALLY HEATED SYSTEMS
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Remove the Heated Mirror Relay and the EBL relay if equipped from the Integrated
Power Module.
Disconnect the A/C Heater Control Module C1 harness connector.
Measure the voltage on the Defogger Relay Control circuit at the A/C Heater Control
Module C1 connector with the Ignition off and on.
Is there any voltage present?
All
Yes
→ Go To 4
No
→ Replace the A/C Heater Control Module in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
4
Turn the ignition off.
Disconnect the Integrated Power Module C5 harness connector.
Disconnect the A/C Heater Control Module C1 harness connector.
Measure the voltage on the Defogger Relay Control circuit at the A/C Heater Control
Module C1 connector with the Ignition off and on.
Is there any voltage present?
All
Yes
→ Repair the Defogger Relay Control circuit for a short to battery.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Integrated Power Module in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
324
ELECTRICALLY HEATED SYSTEMS
DEFOG RELAY CONTROL CKT SHORTED TO BATT —
Continued
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