Pinpoint Test E: All Door Locks Are Inoperative From One Switch - With Memory

Handles, Locks, Latches and Entry Systems - Without Intelligent Access (IA)

Pinpoint Test E: All Door Locks Are Inoperative From One Switch - With Memory

Refer to Wiring Diagram Set 117, Remote Keyless Entry and Alarm for schematic and connector information. Diagrams By Number

Normal Operation

The Smart Junction Box (SJB) sends voltage signals to the passenger door lock control switch through the lock and unlock input circuits. When the lock or unlock switch is pressed, the corresponding voltage signal is routed to ground, signalling the SJB (Smart Junction Box) to lock or unlock the passenger doors and send a lock or unlock command to the Driver Door Module (DDM) over the Medium Speed Controller Area Network (MS-CAN).

The DDM (Driver Door Module) sends voltage signals to the driver door lock control switch through the lock and unlock input circuits. When the lock or unlock switch is pressed, the corresponding voltage signal is routed to ground, signalling the DDM (Driver Door Module) to lock or unlock the driver door and send a lock or unlock command to the SJB (Smart Junction Box) over the MS-CAN (Medium Speed Controller Area Network).

The door lock control switches have a dedicated ground circuit.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors

- Door lock control switch

- DDM (Driver Door Module)

- SJB (Smart Junction Box)

PINPOINT TEST E : ALL DOOR LOCKS ARE INOPERATIVE FROM ONE SWITCH - WITH MEMORY

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

NOTE: Failure to disconnect the battery when instructed will result in false resistance readings.

E1 CHECK THE RECORDED SJB (Smart Junction Box) AND DDM (Driver Door Module) DTCs FROM THE SELF-TEST

- Check the recorded results from the SJB (Smart Junction Box) and DDM (Driver Door Module) self-test.

Are any DTCs present?

Yes
REFER to DTC Charts. Handles, Locks, Latches and Entry Systems - Without Intelligent Access (IA)

No
GO to E2.

E2 CHECK THE DRIVER DOOR LOCK CONTROL SWITCH

- Check to see if the driver door lock control switch is the inoperative switch.

Is the driver door lock control switch inoperative?

Yes
GO to E3.

No
GO to E4.

E3 CHECK THE DRIVER DOOR SWITCH GROUND CIRCUIT FOR AN OPEN

- Disconnect: Negative Battery Cable.

- Disconnect: Driver Door Lock Control Switch C505.

- Measure the resistance between the driver door lock control switch C505-1, circuit GD133 (BK), harness side and ground.





Is the resistance less than 5 ohms?

Yes
GO to E5.

No
REPAIR circuit GD133 (BK) for an open. TEST the system for normal operation.

E4 CHECK THE PASSENGER SWITCH GROUND CIRCUIT FOR AN OPEN

- Disconnect: Negative Battery Cable.

- Disconnect: Passenger Door Lock Control Switch C605.

- Measure the resistance between the passenger door lock control switch C605-1, circuit GD145 (BK/BU), harness side and ground.





Is the resistance less than 5 ohms?

Yes
GO to E5.

No
REPAIR circuit GD145 (BK/BU) for an open. TEST the system for normal operation.

E5 CHECK THE SUSPECT DOOR LOCK CONTROL SWITCH FOR CORRECT OPERATION

- Carry out the door lock control switch component test.

Is the door lock control switch OK?

Yes
For an inoperative driver door lock control switch, GO to E6.

For an inoperative passenger door lock control switch, GO to E7.

No
INSTALL a new door lock control switch. REFER to Door Lock Control Switch . TEST the system for normal operation.

E6 CHECK THE DDM (Driver Door Module) FOR CORRECT OPERATION

- Disconnect all the DDM (Driver Door Module) connectors.

- Check for:
- corrosion

- damaged pins

- pushed-out pins


- Connect all the DDM (Driver Door Module) connectors and make sure they seat correctly.

- Operate the system and verify the concern is still present.

Is the concern still present?

Yes
INSTALL a new DDM (Driver Door Module). REFER to Driver Door Module (DDM) . TEST the system for normal operation.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. TEST the system for normal operation.

E7 CHECK THE SJB (Smart Junction Box) FOR CORRECT OPERATION

- Disconnect all the SJB (Smart Junction Box) connectors.

- Check for:
- corrosion

- damaged pins

- pushed-out pins


- Connect all the SJB (Smart Junction Box) connectors and make sure they seat correctly.

- Operate the system and verify the concern is still present.

Is the concern still present?

Yes
INSTALL a new SJB (Smart Junction Box). TEST the system for normal operation.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.