B1D2B
B1D1F(DDM), B1D2B(PDM) - MIRROR VERTICAL MOTOR CONTROL CIRCUIT LOW
For a complete wiring diagram Consult Diagrams/Electrical.
- When Monitored:
When the Mirror Vertical Driver Output is turned on.
- Set Condition:
DTC B1D1F - If the Driver Door Module senses an excessive current draw on the (P71) Driver Mirror Vertical Driver circuit within 10 ms of turning on the Mirror Vertical Driver Output.
DTC B1D2B - If the Passenger Door Module senses an excessive current draw on the (P72) Passenger Mirror Vertical Driver circuit within 10 ms of turning on the Mirror Vertical Driver Output.
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.
With the scan tool, record and erase DTCs.
Operate the Mirror Switch in all directions several times.
Cycle the ignition from on to off 3 times.
Turn the ignition on.
With the scan tool, read DTCs.
Does the scan tool display: B1D1F or B1D2B MIRROR VERTICAL MOTOR 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 BODY VERIFICATION TEST - VER 1. Body Verification Test.
2. TEST FOR A SHORTED OUTSIDE REARVIEW MIRROR
For the Driver Memory Mirror System, proceed as follows:
- Turn the ignition off.
- Disconnect the Driver Outside Rearview Mirror connector.
- Turn the ignition on.
- With the scan tool, erase DTCs.
- Operate the Mirror Switch in all directions several times.
- Cycle the ignition from on to off 3 times.
- Turn the ignition on.
- With the scan tool, read DTCs.
For the Passenger Memory Mirror System, proceed as follows:
- Turn the ignition off.
- Disconnect the Passenger Outside Rearview Mirror connector.
- Turn the ignition on.
- With the scan tool, erase DTCs.
- Operate the Mirror Switch in all directions several times.
- Cycle the ignition from on to off 3 times.
- Turn the ignition on.
- With the scan tool, read DTCs.
Does the scan tool display: B1D1F or B1D2B MIRROR VERTICAL MOTOR CONTROL CIRCUIT LOW?
Yes
- Go To 3
No
- Replace the Outside Rearview Mirror.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.
3. CHECK THE (P71) DRIVER MIRROR VERTICAL DRIVER CIRCUIT OR THE (P72) PASSENGER MIRROR VERTICAL DRIVER CIRCUIT FOR A SHORT TO GROUND
For the Driver Memory Mirror System, proceed as follows:
- Turn the ignition off.
- Disconnect the Driver Door Module C2 connector.
- Measure the resistance between ground and the (P71) Driver Mirror Vertical Driver circuit in the Driver Door Module C2 connector.
For the Passenger Memory Mirror System, proceed as follows:
- Turn the ignition off.
- Disconnect the Passenger Door Module C2 connector.
- Measure the resistance between ground and the (P72) Passenger Mirror Vertical Driver circuit in the Passenger Door Module C2 connector.
Is the resistance below 10000.0 ohms?
Yes, Driver Mirror
- Repair the (P71) Driver Mirror Vertical Driver circuit for a short to ground.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.
Yes, Passenger Mirror
- Repair the (P72) Passenger Mirror Vertical Driver circuit for a short to ground.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.
No
- Go To 4
4. CHECK THE (P71) DRIVER MIRROR VERTICAL DRIVER CIRCUIT FOR A SHORT TO THE (Z911) GROUND CIRCUIT
For the Driver Memory Mirror System, proceed as follows:
- Measure the resistance between the (P71) Driver Mirror Vertical Driver circuit and the (Z911) Ground circuit in the Driver Door Module C2 connector.
For the Passenger Memory Mirror System, proceed to step 5.
Is the resistance below 10000.0 ohms?
Yes
- Repair the (P71) Driver Mirror Vertical Driver circuit for a short to the (Z911) Ground circuit.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.
No
- Go To 5
5. CHECK THE (P71) DRIVER MIRROR VERTICAL DRIVER CIRCUIT FOR A SHORT TO THE (P69) DRIVER MIRROR SENSOR GROUND CIRCUIT OR THE (P72) PASSENGER MIRROR VERTICAL DRIVER CIRCUIT FOR A SHORT TO THE (P66) PASSENGER MIRROR SENSOR GROUND CIRCUIT
For the Driver Memory Mirror System, proceed as follows:
- Measure the resistance between the (P71) Driver Mirror Vertical Driver circuit and the (P69) Driver Mirror Sensor Ground circuit in the Driver Door Module C2 connector.
For the Passenger Memory Mirror System, proceed as follows:
- Measure the resistance between the (P72) Passenger Mirror Vertical Driver circuit and the (P66) Passenger Mirror Sensor Ground circuit in the Passenger Door Module C2 connector.
Is the resistance below 10000.0 ohms?
Yes, Driver Mirror
- Repair the (P71) Driver Mirror Vertical Driver circuit for a short to the (P69) Driver Mirror Sensor Ground circuit.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.
Yes, Passenger Mirror
- Repair the (P72) Passenger Mirror Vertical Driver circuit for a short to the (P66) Passenger Mirror Sensor Ground circuit.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.
No
- Go To 6
6. CHECK THE (P71) DRIVER MIRROR VERTICAL DRIVER CIRCUIT FOR A SHORT TO THE (C910) DRIVER MIRROR HEATER RETURN CIRCUIT OR THE (P72) PASSENGER MIRROR VERTICAL DRIVER CIRCUIT FOR A SHORT TO THE (C917) PASSENGER MIRROR HEATER RETURN CIRCUIT
For the Driver Memory Mirror System, proceed as follows:
- Measure the resistance between the (P71) Driver Mirror Vertical Driver circuit and the (C910) Driver Mirror Heater Return circuit in the Driver Door Module C2 connector.
For the Passenger Memory Mirror System, proceed as follows:
- Measure the resistance between the (P72) Passenger Mirror Vertical Driver circuit and the (C917) Passenger Mirror Heater Return circuit in the Passenger Door Module C2 connector.
Is the resistance below 10000.0 ohms?
Yes, Driver Mirror
- Repair the (P71) Driver Mirror Vertical Driver circuit for a short to the (C910) Driver Mirror Heater Return circuit.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.
Yes, Passenger Mirror
- Repair the (P72) Passenger Mirror Vertical Driver circuit for a short to the (C917) Passenger Mirror Heater Return circuit.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.
No, Driver Mirror
- Replace the Driver Door Module.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.
No, Passenger Mirror
- Replace the Passenger Door Module.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.