B1D37-PASSENGER MIRROR HEATER CONTROL CIRCUIT LOW

B1D37
B1D37-PASSENGER MIRROR HEATER CONTROL CIRCUIT LOW
- When Monitored:
When the Mirror Heater Driver Output is turned on.
- Set Condition:
If the Passenger Door Module senses an excessive current draw on the (C16) Passenger Mirror Heater Driver circuit within 10 ms of turning
on the Mirror Heater Driver Output.
2010 Jeep Truck Grand Cherokee SRT-8 V8-6.1L    Page 390
1. TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. Verify that the Rear Window Defogger (EBL) mode switch is off (EBL status indicator not illuminated).
3. With the scan tool, record and erase DTCs.
4. Press the Rear Window Defogger (EBL) mode switch on.
5. With the scan tool, read DTCs.
Does the scan tool display: B1D37-PASSENGER MIRROR HEATER CONTROL CIRCUIT LOW?
Yes
- Go To 2
No
- The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and
connectors.
- Perform the BODY VERIFICATION TEST. See: Verification Tests/Body Verification Test.
2. TEST FOR A SHORTED OUTSIDE REARVIEW MIRROR
1. Press the Rear Window Defogger (EBL) mode switch off.
2. Turn the ignition off.
3. Disconnect the Passenger Outside Rearview Mirror connector.
4. Turn the ignition on.
5. With the scan tool, erase DTCs.
6. Press the Rear Window Defogger (EBL) mode switch on.
7. With the scan tool, read DTCs.
Does the scan tool display: B1D37-PASSENGER MIRROR HEATER CONTROL CIRCUIT LOW?
Yes
- Go To 3
No
- Replace the Outside Rearview Mirror.
- Perform the BODY VERIFICATION TEST. See: Verification Tests/Body Verification Test.
2010 Jeep Truck Grand Cherokee SRT-8 V8-6.1L    Page 391
3. CHECK THE (C16) PASSENGER MIRROR HEATER DRIVER CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the Passenger Door Module C1 connector.
3. Measure the resistance between ground and the (C16) Passenger Mirror Heater Driver circuit in the Passenger Door Module C1 connector.
Is the resistance below 10k ohms?
Yes
- Repair the (C16) Passenger Mirror Heater Driver circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. See: Verification Tests/Body Verification Test.
No
- Go To 4
4. CHECK THE (C16) PASSENGER MIRROR HEATER DRIVER CIRCUIT FOR A SHORT TO THE (Z908) GROUND CIRCUIT
1. Measure the resistance between the (C16) Passenger Mirror Heater Driver circuit and the (Z908) Ground circuit in the Passenger Door
Module C1 connector.
Is the resistance below 10k ohms?
Yes
- Repair the (C16) Passenger Mirror Heater Driver circuit for a short to the (Z908) Ground circuit.
- Perform the BODY VERIFICATION TEST. See: Verification Tests/Body Verification Test.
No
- Go To 5
2010 Jeep Truck Grand Cherokee SRT-8 V8-6.1L    Page 392
5. CHECK THE (C16) PASSENGER MIRROR HEATER DRIVER CIRCUIT FOR A SHORT TO THE (P66) PASSENGER MIRROR
SENSOR GROUND CIRCUIT
1. Measure the resistance between the (C16) Passenger Mirror Heater Driver circuit and the (P66) Passenger Mirror Sensor Ground circuit in the
Passenger Outside Rearview Mirror connector.
Is the resistance below 10k ohms?
Yes
- Repair the (C16) Passenger Mirror Heater Driver circuit for a short to the (P66) Passenger Mirror Sensor Ground circuit.
- Perform the BODY VERIFICATION TEST. See: Verification Tests/Body Verification Test.
No
- Go To 6
6. CHECK THE (C16) PASSENGER MIRROR HEATER DRIVER CIRCUIT FOR A SHORT TO THE (C917) PASSENGER MIRROR
HEATER RETURN CIRCUIT
1. Measure the resistance between the (C16) Passenger Mirror Heater Driver circuit and the (C917) Passenger Mirror Heater Return circuit in the
Passenger Door Module C1 connector.
Is the resistance below 10k ohms?
Yes
- Repair the (C16) Passenger Mirror Heater Driver circuit for a short to the (C917) Passenger Mirror Heater Return circuit.
- Perform the BODY VERIFICATION TEST. See: Verification Tests/Body Verification Test.
No
2010 Jeep Truck Grand Cherokee SRT-8 V8-6.1L    Page 393
- Replace the Passenger Door Module.
- Perform the BODY VERIFICATION TEST. See: Verification Tests/Body Verification Test.