Passenger Door Module (PDM)
B2851-15-PASSENGER MIRROR APPROACH LIGHT CONTROL - CIRCUIT SHORT TO BATTERY OR OPEN
For a complete wiring diagram, refer to the Wiring Information.
- When Monitored:
Continuously.
- Set Condition:
The Door Module senses an open or a short high on the (P553) Passenger Mirror Approach Lamp Driver circuit for more than two seconds.
1. TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. Using a scan tool, record and erase Diagnostic Trouble Codes (DTCs).
3. Turn the drivers turn signal on.
4. Turn the approach lamps on.
5. Turn the rear defogger on.
6. Press and release the Mirror Select switch to select the Passenger Outside Rearview Mirror.
7. Operate the Mirror Adjust switch in all directions several times while monitoring the scan tool for DTCs.
Note: After adjusting the mirror in one direction wait at least two seconds before adjusting the mirror in the opposite direction, as this will allow time for an active fault to set if present.
8. With the scan tool, read the active DTCs.
Does the scan tool display: B2851-15-PASSENGER MIRROR APPROACH LIGHT CONTROL - CIRCUIT SHORT TO BATTERY OR OPEN as active?
Yes
- Go To 2
No
- The conditions that caused this code to set are not present at this time. For vehicle's equipped with folding outside rearview mirrors, repeat test with mirror folded. If DTC is now active, Go To 2. Otherwise, use the wiring diagram/schematic as a guide and inspect the wiring and connectors.
- Perform the BODY VERIFICATION TEST. Body Verification Test.
2. CHECK (P553) PASSENGER MIRROR APPROACH LAMP DRIVER CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the Passenger Outside Rearview Mirror C1 and C2 (Component Side) harness connectors from the Door Module.
3. Turn the ignition on.
4. Measure the voltage between ground and the (P553) Passenger Mirror Approach Lamp Driver circuit in the Passenger Outside Rearview Mirror C1 (Component Side) harness connector.
Is there any voltage present?
Yes
- Repair the (P553) Passenger Mirror Approach Lamp Driver circuit for a short to voltage. If the wiring harness and connector are okay, replace the Passenger Outside Rearview Mirror. Outside Rearview Mirror - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.
No
- Go To 3
3. CHECK (P553) PASSENGER MIRROR APPROACH LAMP DRIVER CIRCUIT AND (P554) PASSENGER BLIND SPOT/APPROACH RETURN CIRCUIT FOR AN OPEN
1. Turn the ignition off.
2. Measure the resistance between the (P553) Passenger Mirror Approach Lamp Driver circuit and the (P554) Passenger Blind Spot/Approach Return circuit at the Passenger Outside Rearview Mirror C1 (Component Side) connector.
Is the resistance below 10.0 Ohms?
Yes
- Go To 4
No
- Repair the (P553) Passenger Mirror Approach Lamp Driver circuit or the (P554) Passenger Blind Spot/Approach Return circuit for an open. If the wiring harness and connector are okay, replace the Passenger Outside Rearview Mirror. Outside Rearview Mirror - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.
4. CHECK (P553) PASSENGER MIRROR APPROACH LAMP DRIVER CIRCUIT FOR A SHORT TO ANOTHER MIRROR DRIVER OR SIGNAL CIRCUIT
1. Measure the resistance between the (P553) Passenger Mirror Approach Lamp Driver circuit (C1-1) and each of the designated Mirror Driver and Signal circuits in the Passenger Outside Rearview Mirror C1 and C2 (Component Side) connectors.
Is the resistance below 10K Ohms for any measurement?
Yes
- Repair all circuits with a resistance below 10K Ohms for a short to the (P553) Passenger Mirror Approach Lamp Driver circuit. If the wiring harness and connector are okay, replace the Passenger Outside Rearview Mirror. Outside Rearview Mirror - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.
No
- Inspect the wiring and connectors for damage and repair as necessary. If the wiring and connectors are okay, replace the Door Module. Door Module - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.