Circuit Description
The body control module (BCM) door locks ground circuit 550 provides ground for the door lock and unlock relays in the BCM that control the door lock actuators. If the BCM detects an open in this circuit, DTC B1349 is set.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC B1349 Device Ground Circuit Open
Conditions for Running the DTC
The BCM electronics ground circuit 1550 must be connected to ground and the BCM must be in its normal operating state.
Conditions for Setting the DTC
The BCM detects the door locks ground circuit 550 ground circuit open for greater than 0.375 seconds.
Action Taken When the DTC Sets
The BCM stores DTC B1349 in memory.
Conditions for Clearing the DTC
| • | The BCM no longer detects the open circuit. |
| • | 100 consecutive ignition cycles have been recorded without the DTC being detected. |
Diagnostic Aids
| • | If the BCM door locks ground circuit 550 is open from the center console fuse block connector C2, DTC B1349 will not set. The BCM takes a redundant path to ground through another ground circuit in the center console fuse block. |
| • | The BCM is mounted directly on top of the center console fuse block and is connected to the fuse block through BCM connector C3. If during the replacement of the BCM the connector C3 is not fully seated in the center console fuse block, DTC B1349 may set. If the fault occurred after BCM replacement, DTC B1349 may be set with DTC B1354. |
| • | Check the BCM mounting to the center console fuse block. The BCM connector C3 may have come loose from the fuse block. |
| • | If DTC B1349 is a history DTC, the fault may be intermittent. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. |
| • | The following conditions may cause an intermittent malfunction to occur: |
| - | An internal intermittent open in the BCM |
| - | An intermittent open in the connection of the BCM to the center console fuse block |
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Door Lock/Indicator Schematics Connector End View Reference: Computer/Integrating Systems Connector End Views in Computer/Integrating Systems or Electrical Center Identification Views in Wiring Systems | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
2 | Inspect for poor connections between the body control module (BCM) harness connector C3 and the center console fuse block. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 4 | Go to Step 3 |
3 | Replace the BCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 4 | -- |
4 |
Does the DTC reset? | Go to Step 2 | System OK |
