Also, door locks lock, but don't unlock
Do you know if your door locks are module controlled or non module controlled ?
Locks, Latches and Entry Systems - Module Controlled
Principles Of Operation
CAUTION: Do not use a key, pencil or any other hard object to press the keyless entry keypad buttons. These objects may damage the keyless entry keypad buttons.
NOTE: The remote transmitter will not operate with the transmission in REVERSE or DRIVE.
NOTE: Upon installation of a new driver door module (DDM), the module must be reconfigured. Refer to Section 418-01 .
The DDM receives inputs from the digital transmission range (TR) sensor, ignition switch, brake switch, door lock control switches, lighting control module (LCM), keyless entry keypad and remote transmitter. The DDM outputs consists of keyless entry keypad illumination, door lock actuators, luggage compartment lid release solenoid, and LCM.
For DDM removal and installation information, refer to Section 419-10 .
Inspection and Verification
WARNING: If equipped with fire suppression system, refer to Section 419-03 for important safety warnings.
NOTE: Before starting electrical diagnosis, check for mechanical binds by manually operating the door locks. Operate lock system several times from each switch while observing the operation of all door locks. Be sure battery is fully charged.
Drive Door Module (DDM) Diagnostic Trouble Code (DTC) Index
DTC
Description
Source
Action
B1352
Ignition Key In Circuit Failure
DDM
Go To Pinpoint Test H .
B1396
Door Lock Circuit Short To Battery
DDM
Go To Pinpoint Test C .
B1526
Keyless Entry Keypad Circuit Short To Ground
DDM
Go To Pinpoint Test E .
B1553
Luggage Compartment Lid Release Circuit Short To Ground
DDM
Go To Pinpoint Test B .
B1751
Park/Neutral Switch Circuit Short To Battery
DDM
Go To Pinpoint Test L .
B2425
Remote Keyless Entry Out Of Synchronization
DDM
Go To Pinpoint Test M .
Lighting Control Module (LCM) Diagnostic Trouble Code (DTC) Index
DTC
Description
Source
Action
B1300
Door Lock Circuit Failure
LCM
Go To Pinpoint Test N .
B1310
Door Unlock Circuit Failure
LCM
Go To Pinpoint Test N .
B1396
Door Lock Circuit Short To Battery
LCM
Go To Pinpoint Test N .
B1397
Door Unlock Circuit Short To Battery
LCM
Go To Pinpoint Test N .
B1677
Alarm Panic Input Circuit Failure
LCM
Go To Pinpoint Test J .
B1679
Alarm Panic Input Circuit Short To Battery
LCM
Go To Pinpoint Test J .
NOTE: For a complete list of DDM and LCM DTCs, refer to Section 419-10 .
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Locks, Latches and Entry Systems — Non Module Controlled
Verify the customer concern.
Visually inspect for obvious signs of mechanical and electrical damage.
Visual Inspection Chart Mechanical Electrical
Binding latch mechanisms
Binding linkage
Misaligned door
Battery junction box (BJB) fuse 8 (20A)
BJB circuit breaker 601 (20A)
Circuitry
Connectors
Door lock actuator
Door lock control switch
Luggage compartment lid release solenoid
Luggage compartment lid release switch
If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
If the concern is not visually evident, determine the symptom and GO to Symptom Chart .
Symptom Chart
Symptom Chart Condition Possible Sources Action
All the locks operate from one switch only
Circuitry
Door lock control switch
Go To Pinpoint Test P .
The door locks operate only one way
Circuitry
Door lock actuator
Door lock control switch
Go To Pinpoint Test Q .
The luggage compartment lid is inoperative
Battery junction box (BJB) circuit breaker 601 (20A)
Circuitry
Luggage compartment lid solenoid
Luggage compartment lid release switch
Go To Pinpoint Test R .
All door locks are inoperative
Battery junction box (BJB) fuse 8 (20A)
Circuitry
Door lock control switch
Go To Pinpoint Test S .
A single door lock is inoperative
Circuitry
Door lock actuator
Go To Pinpoint Test T .
Do you know how to do basic automotive electrical testing ? Videos on youtube then you can look at wiring diagrams at http://bbbind.com/free_tsb.html
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