Pinpoint Test Ab : B1087:83 Or B1087:87: Notes
Refer to Remote Keyless Entry and Alarm for schematic and connector information.
Normal Operation and Fault Conditions
The DDM communicates with the Driver Rear Door Module (DRDM) over a LIN circuit. In the event the Driver Rear Door Module (DRDM) fails, the left rear power window and power door lock become inoperative.
The PDM communicates with the Passenger Rear Door Module (PRDM) over a LIN circuit. In the event the Passenger Rear Door Module (PRDM) fails, the right rear power window and power door lock become inoperative.
DDM/ PDM DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B1087:83 | LIN Bus "A": Value Of Signal Protection Calculation Incorrect | Sets when the DDM/ PDM detects a fault with the communication from the corresponding rear door moor module. |
| B1087:87 | LIN Bus "A": Signal Invalid | Sets when the DDM/ PDM detects a fault with the communication from the corresponding rear door moor module. |
Possible Causes
- Fuse
- Wiring, terminals or connectors
- Driver Rear Door Module (DRDM)
- Passenger Rear Door Module (PRDM)
- BCM
Visual Inspection and Diagnostic Pre-checks
- Inspect the BCM fuse 29 (30A) (Driver Rear Door Module (DRDM)) and make sure it is OK.
- Inspect the BCM fuse 30 (30A) (Passenger Rear Door Module (PRDM)) and make sure it is OK.