Pinpoint Test A: The Alarm System Does Not Arm/Disarm From The Driver Door Lock Cylinder - Vehicles With Intelligent Access (IA

Anti-Theft

Pinpoint Tests

Pinpoint Test A: The Alarm System Does Not Arm/Disarm From The Driver Door Lock Cylinder - Vehicles With Intelligent Access (IA)

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

Normal Operation

When the Driver Door Module (DDM) detects the driver door lock cylinder RESET switch as active, it broadcasts a message via the Medium Speed Controller Area Network (MS-CAN) to the Smart Junction Box (SJB) and the SJB disarms the alarm.

When the DDM detects the driver door lock cylinder SET switch as active, it broadcasts a message via the MS-CAN to the SJB and the SJB arms the alarm.

- DTC B2112 (Door Driver Set Switch Stuck Failure) - set by the DDM when it detects the driver door lock cylinder SET switch as active for greater than 2 minutes during normal operation, or for any duration during the self-test.
- DTC B2116 (Door Driver Reset Switch Stuck Failure) - set by the DDM when it detects the driver door lock cylinder RESET switch as active for greater than 2 minutes during normal operation, or for any duration during the self-test.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors
- Driver door lock cylinder switch (part of the door latch)
- DDM
- SJB



PINPOINT TEST A: THE ALARM SYSTEM DOES NOT ARM/DISARM FROM THE DRIVER DOOR LOCK CYLINDER - VEHICLES WITH IA

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

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A1 MONITOR THE DRIVER DOOR SET/RESET SWITCH STATUS PID (SR_SW_DD)


- Ignition ON.
- Enter the following diagnostic mode on the scan tool: DDM DataLogger.
- Insert the key into the driver door lock cylinder.
- Monitor the PID (SR_SW_DD) with the key in the unlock (RESET), lock (SET), and at-rest positions.
- Does the PID agree with the key position?

Yes
GO to A7.

No
GO to A2.

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A2 CHECK FOR DRIVER DOOR LOCK CYLINDER SWITCH DTCs


- Clear the DDM DTCs.
- Ignition OFF.
- Wait 3 minutes.
- Ignition ON.
- Repeat the DDM self-test.
- Is DTC B2112 or DTC B2116 present?

Yes
GO to A3.

No
GO to A5.

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A3 CHECK THE DRIVER DOOR LOCK CYLINDER SWITCH


- Clear the DDM DTCs.
- Ignition OFF.
- Disconnect: Driver Door Latch C525.
- Wait 3 minutes.
- Ignition ON.
- Repeat the DDM self-test.
- Is DTC B2112 or DTC B2116 still present?

Yes
GO to A4.

No
INSTALL a new driver door latch. REFER to Doors, Hood and Trunk &/or Locks. TEST the system for normal operation.

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A4 CHECK THE SET/RESET CIRCUITS FOR A SHORT TO GROUND


- Ignition OFF.
- Disconnect: DDM C501a.
- For a concern with the RESET circuit, measure the resistance between the DDM C501a-12, circuit CRT19 (GN/VT), harness side and ground.
- For a concern with the SET circuit, measure the resistance between the DDM C501a-4, circuit CRT21 (BU/BN), harness side and ground.




- Is the resistance greater than 10,000 ohms?

Yes
GO to A6.

No
REPAIR the circuit. CLEAR the DTCs. TEST the system for normal operation.

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A5 CHECK THE SET/RESET CIRCUITS FOR AN OPEN


- Ignition OFF.
- Disconnect: Driver Door Latch C525.
- Disconnect: DDM C501a.
- For a concern with the RESET circuit, measure the resistance between the DDM C501a-12, circuit CRT19 (GN/VT), harness side and the driver door latch C525-1, circuit CRT19 (GN/VT), harness side; and between the DDM C501a-12, circuit CRT19 (GN/VT), harness side and ground.




- For a concern with the SET circuit, measure the resistance between the DDM C501a-4, circuit CRT21 (BU/BN), harness side and the driver door latch C525-2, circuit CRT21 (BU/BN), harness side; and between the DDM C501a-4, circuit CRT21 (BU/BN), harness side and ground.




- Is the resistance less than 5 ohms?

Yes
GO to A6.

No
REPAIR the circuit. TEST the system for normal operation.

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A6 CHECK FOR CORRECT DDM OPERATION


- Ignition OFF.
- Connect: All Disconnected Connectors.
- Disconnect all the DDM connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the DDM 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. REFER to Body Control Systems. 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. CLEAR any DTCs present.

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A7 CHECK FOR CORRECT SJB OPERATION


- Ignition OFF.
- Disconnect all the SJB connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the SJB 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. REFER to Body Control Systems. 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.

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