B1D35

B1D35(DDM), B1D39(PDM) - MIRROR HEATER CONTROL CIRCUIT OPEN

B1D35(DDM), B1D39(PDM) - Mirror Heater Control Circuit Open:

WHEN MONITORED
When the Mirror Heater Driver Output is turned on.

SET CONDITION
DTC B1D35 - If the Driver Door Module senses voltage on the (C110) Driver Mirror Heater Driver circuit within 10 ms of turning on the Mirror Heater Driver Output.
DTC B1D39 - If the Passenger Door Module senses voltage on the (C16) Passenger Mirror Heater Driver circuit within 10 ms of turning on the Mirror Heater Driver Output.

POSSIBLE CAUSES
- FOR THE DRIVER MEMORY MIRROR SYSTEM:
- (C110) driver mirror heater driver circuit open
- (C910) driver mirror heater return circuit open
- Driver outside rearview mirror open
- Driver door module

FOR THE PASSENGER MEMORY MIRROR SYSTEM:
- (C16) passenger mirror heater driver circuit open
- (C917) passenger mirror heater return circuit open
- Passenger outside rearview mirror open
- Passenger door module

NOTE: This procedure addresses the Driver Memory Mirror system's circuits and components and the Passenger Memory Mirror system's circuits and components. Select only that which applies to the system you are diagnosing.

DIAGNOSTIC TEST

1. TEST FOR INTERMITTENT CONDITION
Turn the ignition on.
Verify that the Rear Window Defogger (EBL) mode switch is off (EBL status indicator not illuminated).
With the scan tool, record and erase DTCs.
Turn the ignition off, wait 10 seconds, then turn the ignition on.
Press the Rear Window Defogger (EBL) mode switch on.
With the scan tool, read DTCs.

Q: Does the scan tool display: B1D35 or B1D39 MIRROR HEATER CONTROL CIRCUIT OPEN?

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 BODY VERIFICATION TEST - VER 1. Body Verification Test

2. TEST FOR AN OPEN OUTSIDE REARVIEW MIRROR




For the Driver Memory Mirror System, proceed as follows:
- Press the Rear Window Defogger (EBL) mode switch off.
- Turn the ignition off.
- Disconnect the Driver Outside Rearview Mirror connector.
- Connect a 12-volt test light between the (C110) Driver Mirror Heater Driver circuit and the (C910) Driver Mirror Heater Ground circuit.
- Turn the ignition on.
- Press the Rear Window Defogger (EBL) mode switch on.

For the Passenger Memory Mirror System, proceed as follows:
- Press the Rear Window Defogger (EBL) mode switch off.
- Turn the ignition off.
- Disconnect the Passenger Outside Rearview Mirror connector.
- Connect a 12-volt test light between the (C16) Passenger Mirror Heater Driver circuit and the (C917) Passenger Mirror Heater Ground circuit.
- Turn the ignition on.
- Press the Rear Window Defogger (EBL) mode switch on.

Q: Does the test light illuminate brightly?

YES: Replace the Outside Rearview Mirror.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 3

3. CHECK THE (C110) DRIVER MIRROR HEATER DRIVER CIRCUIT OR THE (C16) PASSENGER MIRROR HEATER DRIVER CIRCUIT FOR AN OPEN




For the Driver Memory Mirror System, proceed as follows:
- Turn the ignition off.
- Disconnect the Driver Door Module C1 connector.
- Measure the resistance of the (C110) Driver Mirror Heater Driver circuit between the Driver Outside Rearview Mirror connector and the Driver Door Module C1 connector.

For the Passenger Memory Mirror System, proceed as follows:
- Turn the ignition off.
- Disconnect the Passenger Door Module C1 connector.
- Measure the resistance of the (C16) Passenger Mirror Heater Driver circuit between the Passenger Outside Rearview Mirror connector and the Passenger Door Module C1 connector.

Q: Is the resistance below 2.0 ohms?

YES: Go To 4

No, Driver Mirror
Repair the (C110) Driver Mirror Heater Driver circuit for an open.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No, Passenger Mirror
Repair the (C16) Passenger Mirror Heater Driver circuit for an open.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

4. CHECK THE (C910) DRIVER MIRROR HEATER RETURN CIRCUIT OR THE (C917) PASSENGER MIRROR HEATER RETURN CIRCUIT FOR AN OPEN




For the Driver Memory Mirror System, proceed as follows:
- Measure the resistance of the (C910) Driver Mirror Heater Return circuit between the Driver Outside Rearview Mirror connector and the Driver Door Module C1 connector.

For the Passenger Memory Mirror System, proceed as follows:
- Measure the resistance of the (C917) Passenger Mirror Heater Return circuit between the Passenger Outside Rearview Mirror connector and the Passenger Door Module C1 connector.

Q: Is the resistance below 2.0 ohms?

Yes, Driver Mirror
Replace the Driver Door Module.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

Yes, Passenger Mirror
Replace the Passenger Door Module.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No, Driver Mirror
Repair the (C910) Driver Mirror Heater Return circuit for an open.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No, Passenger Mirror
Repair the (C917) Passenger Mirror Heater Return circuit for an open.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test