Pinpoint Test A: The Alarm System Does Not Disarm - From The Driver Door
Anti-Theft
Pinpoint Tests
Pinpoint Test A: The Alarm System Does Not Disarm - From The Driver Door
Refer to Wiring Diagram Set 117, Remote Keyless Entry and Alarm for schematic and connector information. Diagrams By Number
NOTE: If an unauthorized vehicle entry is through the driver door, the perimeter alarm will not activate for 12 seconds. If an unauthorized vehicle entry is through one of the passenger doors (or hood), the perimeter alarm activates immediately.
Normal Operation
When the key is turned to the UNLOCK position in the driver door lock cylinder, the door disarm switch provides a ground signal to the SJB on circuit CPL28 (VT/BN). With this signal, the SJB disarms the perimeter alarm, thereby allowing entry without activating the alarm.
- DTC B2100 (Door Driver Key Cylinder Switch Failure) - sets when there is a short to ground in the circuit between the door disarm switch and the SJB. A shorted switch (shorted to UNLOCK) could also cause this DTC.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Door disarm switch (part of the driver door latch)
- SJB
PINPOINT TEST A: THE ALARM SYSTEM DOES NOT DISARM - FROM THE DRIVER DOOR
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 CHECK THE DRIVER DOOR DISARM SWITCH INPUT TO THE SJB
- Ignition OFF.
- Disconnect: SJB C2280c.
- Measure the resistance between the SJB C2280c-8, circuit CPL28 (VT/BN), harness side and ground while turning the driver door lock cylinder to UNLOCK, and with the key in the AT-REST position.
- Is the resistance less than 5 ohms with the door lock cylinder in the UNLOCK position and greater than 10,000 ohms with the door lock cylinder in the AT-REST position?
Yes
GO to A4.
No
GO to A2.
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A2 CHECK CIRCUIT CPL28 (VT/BN) FOR AN OPEN OR SHORT TO GROUND
- Disconnect: Driver Door Latch C525.
- Measure the resistance between the driver door latch C525-1, circuit CPL28 (VT/BN), harness side and the SJB C2280c-8, circuit CPL28 (VT/BN), harness side; and between the driver door latch C525-1, circuit CPL28 (VT/BN), harness side and ground.
- Is the resistance less than 5 ohms between the driver door latch and the SJB, and greater than 10,000 ohms between the driver door latch and ground?
Yes
GO to A3.
No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
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A3 CHECK THE DRIVER DOOR DISARM SWITCH GROUND
- Measure the resistance between the driver door latch C525-6, circuit GD133 (BK), harness side and ground.
- Is the resistance less than 5 ohms?
Yes
INSTALL a new driver door latch. TEST the system for normal operation.
No
REPAIR the circuit. TEST the system for normal operation.
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A4 CHECK FOR CORRECT SJB OPERATION
- 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. CYCLE each key to the ON position for a minimum of 6 seconds to
PROGRAM the Remote Keyless Entry (RKE) function of the Integrated Keyhead Transmitter (IKT) keys. 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 the DTCs. REPEAT the self-test. TEST the system for normal operation.
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