Pinpoint Test E: The Power Door Locks Do Not Operate Correctly From Both Front Door Lock Cylinders Or Lock Levers
Handles, Locks, Latches and Entry Systems
Pinpoint Tests
Pinpoint Test E: The Power Door Locks Do Not Operate Correctly From Both Front Door Lock Cylinders Or Lock Levers
Refer to Wiring Diagram Set 117, Remote Keyless Entry and Alarm for schematic and connector information. Diagrams By Number
Normal Operation
The Generic Electronic Module (GEM) sends voltage signals to the door lock control switches (internal to the latches). When the latch is moved to a lock or unlock position, the corresponding lock or unlock voltage signal is routed to ground.
The GEM contains internal relays that are energized depending on input received. When the GEM receives a lock or unlock request from the door lock control switch, the GEM energizes the appropriate relay(s) to lock or unlock the doors.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Front door latch
- GEM
PINPOINT TEST E: THE POWER DOOR LOCKS DO NOT OPERATE CORRECTLY FROM BOTH FRONT DOOR LOCK CYLINDERS OR LOCK LEVERS
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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E1 CHECK THE RECORDED GEM DTCs FROM THE SELF-TEST
- Check the recorded results from the GEM self-test.
- Is DTC B1300 or DTC B1310 present?
Yes
GO to Pinpoint Test G. Pinpoint Test G: DTC B1300, B1310 Or B2241
No
GO to E2.
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E2 CHECK THE UNLOCK SWITCH PID STATUS
- Enter the following diagnostic mode on the scan tool: GEM DataLogger .
- Place both front door lock levers in the LOCK position while observing the GEM PID (C_UNLK_SW).
- Does the GEM PID (C_UNLK_SW) read OFF?
Yes
GO to E6.
No
GO to E3.
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E3 CHECK THE LH FRONT DOOR LATCH FOR A SHORT TO GROUND
- Disconnect: LH Front Door Lock Actuator C525 .
- Observe the GEM PID (C_UNLK_SW) after unplugging the lock actuator.
- Does the GEM PID (C_UNLK_SW) read OFF?
Yes
INSTALL a new LH front door latch. REFER to Front Door Latch Front Door Latch. TEST the system for normal operation.
No
GO to E4.
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E4 CHECK THE RH FRONT DOOR LATCH FOR A SHORT TO GROUND
- Disconnect: RH Front Door Lock Actuator C609 .
- Observe the GEM PID (C_UNLK_SW) after unplugging the lock actuator.
- Does the GEM PID (C_UNLK_SW) read OFF?
Yes
INSTALL a new RH front door latch. REFER to Front Door Latch Front Door Latch. TEST the system for normal operation.
No
GO to E5.
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E5 CHECK THE UNLOCK INPUT CIRCUIT FOR A SHORT TO GROUND
- Ignition OFF.
- Disconnect: GEM C201e .
- Measure the resistance between the LH door lock control switch C525-1, circuit 31S-AA64 (BK/GN), harness side and ground.
- Is the resistance greater than 10,000 ohms?
Yes
GO to E7.
No
REPAIR the circuit for a short to ground. TEST the system for normal operation.
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E6 CHECK THE LOCK INPUT CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: LH Front Door Lock Actuator C525 .
- Disconnect: GEM C201c .
- Measure the resistance between the GEM C201c-10, circuit 31S-AA63 (BK/OG), harness side and the LH door lock control switch C525-3, circuit 31S-AA63 (BK/OG), harness side.
- Is the resistance less than 5 ohms?
Yes
GO to E7.
No
REPAIR the circuit for an open. TEST the system for normal operation.
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E7 CHECK FOR CORRECT GEM OPERATION
- Disconnect all the GEM connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the GEM 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 GEM. REFER to Multifunction Electronic Modules Service and Repair. 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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