Column Lock Functional State (Ignition ON)
| Symptoms
| Possible Malfunctions
|
Use a scan tool to display the steering column lock state. Turn ON the
ignition switch, and select BCM data display (Column Lock State).
|
Enable Stdby
(Requires battery disconnect to clear)
|
| • | SERVICE COLUMN LOCK message |
| • | Engine Cranks, No Start |
| • | Column will not LOCK or UNLOCK |
|
| • | Column lock motor disconnected with ign ON. |
| • | Open or shorted column lock feedback switch. |
| • | Open or shorted column lock feedback circuit (with ignition ON). |
|
Unlocking Failure
|
| • | SERVICE COLUMN LOCK Message |
| • | PULL KEY-WAIT 10 SEC message |
| • | Column will not LOCK or UNLOCK |
|
| • | Steering column motor Malfunction |
| • | Open or shorted steering column motor circuit |
| • | Open or shorted Steering column lock relay circuit |
|
| • | SERVICE COLUMN LOCK Message |
| • | PULL KEY-WAIT 10 SEC message |
|
| • | Open or shorted column lock feedback switch. |
| • | Open or shorted column lock feedback circuit |
|
Lock Failure
|
| • | SERVICE COLUMN LOCK message |
| • | PULL KEY-WAIT 10 SEC message |
| • | Column will not LOCK or UNLOCK |
|
| • | Steering column motor Malfunction |
| • | Open or shorted steering column motor drive circuit |
| • | Open or shorted Steering column lock relay circuit |
|
Unlk Volt Delay
|
| • | Steering column will not UNLOCK |
| • | Abnormal Steering column motor sounds |
| Low
battery voltage
|
Lock Fail Unlk
| After 1 second enters Lock Fail Standby
state
| --
|
Lock Fail Stdby
|
| • | SERVICE COLUMN LOCK message |
| • | PULL KEY-WAIT 10 SEC message |
| • | Column will not LOCK or UNLOCK |
|
| • | Steering column motor Malfunction |
| • | Open or shorted steering column motor drive circuit |
| • | Battery disconnected with the key IN the ignition |
| • | Feedback circuit malfunction |
| • | Open or shorted Steering column lock relay circuit |
|
Enable Unlk
| After 1 second enters Lock Fail Standby state
| --
|
PCM F.E Latch
|
| • | Unable to communicate with the PCM |
| • | BCM stores a DTC U1016 and/or DTC U1255 |
|
| • | Loss of communications between the BCM and PCM |
| • | Serial data line open or short |
|
PCM F.E Stdby
|
| • | Unable to communicate with the PCM |
| • | BCM stores a DTC U1016 and/or DTC U1255 |
|
| • | Loss of communications between the BCM and PCM |
| • | Serial data line open or short |
|
PCM F.E Unlock
| After 1 second enters PCM Fail Enable Standby state
| --
|
