FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Test I: The Door Locks Operate Only One Way

PINPOINT TEST I: THE DOOR LOCKS OPERATE ONLY ONE WAY


I1-I2:






I2-I4:






I4-I6:






NOTE: Make sure that the power lock inhibit feature is not enabled.

Normal Operation
The door lock control switches are grounded on circuit 1205 (BK). The door lock control switches supply a ground signal to the smart junction box (SJB). When the SJB receives a door lock control switch lock command through circuit 1316 (WH/VT) from the driver door lock control switch, or circuit 1296 (OG/BK) from the passenger door lock control switch, it supplies voltage to the door lock actuators through circuits 1328 (RD/OG) and 1383 (RD) while grounding circuits 1329 (YE) and 1384 (LB) to lock all the doors. When the SJB receives a door lock control switch unlock command through circuits 1317 (DB/LG) from the driver door lock control switch, or circuit 1297 (YE/RD) from the passenger door lock control switch, it supplies voltage to the door lock actuators through circuits 1329 (YE) and 1384 (LB) while grounding circuits 1328 (RD/OG) and 1383 (RD) to unlock all the doors.

Possible Causes
- circuit 1296 (OG/BK) short to voltage or short to ground
- circuit 1297 (YE/RD) short to voltage or short to ground
- circuit 1316 (WH/VT) short to voltage or short to ground
- circuit 1317 (DB/LG) short to voltage or short to ground
- SJB