Pinpoint Test D: The Courtesy Lamps Do Not Turn On With One Door Open
Interior Lighting
Pinpoint Tests
Pinpoint Test D: The Courtesy Lamps Do Not Turn On With One Door Open
Refer to Wiring Diagram Set 117, Remote Keyless Entry and Alarm for schematic and connector information. Diagrams By Number
Normal Operation
When any door is opened, the ajar switch opens the circuit to the Smart Junction Box (SJB) (vehicles without Intelligent Access (IA)) or the Remote Function Actuator (RFA) module (vehicles with IA) to indicate a request for the courtesy lamps. When the instrument panel dimmer switch is rotated to the dome detent position, ground is supplied on circuit CLN28 (GN/BU) to the SJB. The SJB or the RFA module, monitors the ajar circuits. The dome input circuit is monitored by the SJB only. Based on the inputs, the SJB supplies voltage to the courtesy lamps on circuit VLN33 (GY/VT).
When the instrument panel dimmer switch is in the dome defeat position, the SJB does not supply voltage to the courtesy lamps on circuit VLN33 (GY/VT).
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Door ajar switch
- Instrument panel dimmer switch
- SJB
- RFA module (if equipped)
PINPOINT TEST D: THE COURTESY LAMPS DO NOT TURN ON WITH ONE DOOR OPEN
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
NOTE: Make sure the dimmer switch is not in the courtesy lamp DEFEAT position before continuing diagnostics.
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.
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D1 CHECK THE DOOR AJAR PIDs
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: RFA Module DataLogger (Vehicles With IA).
- Monitor the RFA module door ajar switch PIDs (Dr_Ajr_Sw_LF, Dr_Ajr_Sw_LR, Dr_Ajr_Sw_RF, and Dr_Ajr_Sw_RR) while opening and closing all the doors.
- Enter the following diagnostic mode on the scan tool: SJB DataLogger (Vehicles Without IA).
- Monitor the SJB door ajar switch PIDs (D_DR_SW, P_DR_SW, LRDR_SW, and RRDR_SW) while opening and closing all the doors.
- Do all the door ajar switch PID values agree with the door positions?
Yes
GO to D4.
No
GO to D2.
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D2 CHECK THE DOOR AJAR SWITCH OPERATION
- Disconnect: Suspect Door Ajar Switch .
- Do the courtesy lamps illuminate?
Yes
INSTALL a new door ajar switch in question. TEST the system for normal operation.
No
GO to D3.
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D3 CHECK THE DOOR AJAR SWITCH CIRCUIT FOR A SHORT TO GROUND
- Ignition OFF.
- Disconnect: SJB C2280c or RFA Module C2153e.
- Measure the resistance between the suspect door ajar switch, harness side and ground as follows:
- Is the resistance greater than 10,000 ohms?
Yes
GO to D4.
No
REPAIR the circuit in question. TEST the system for normal operation.
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D4 CHECK THE INSTRUMENT PANEL DIMMER SWITCH
- Ignition OFF.
- Disconnect: Instrument Panel Dimmer Switch C2065.
- Connect a fused jumper wire between the instrument panel dimmer switch C2065-5, circuit CLN28 (GN/BU), harness side and the instrument panel dimmer switch C2065-4, circuit RLN29 (WH/OG), harness side.
- Do the courtesy lamps illuminate?
Yes
REMOVE the jumper wire. INSTALL a new instrument panel dimmer switch. TEST the system for normal operation.
No
REMOVE the jumper wire. GO to D5.
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D5 CHECK CIRCUIT CLN27 (WH/BN) FOR A SHORT TO GROUND
- Disconnect: Instrument Panel Dimmer Switch C2065.
- Measure the resistance between the instrument panel dimmer switch C2065-2, circuit CLN27 (WH/BN), harness side and ground.
- Is the resistance greater than 10,000 ohms?
Yes
For vehicles not equipped with IA, GO to D6.
For vehicles equipped with IA, GO to D7.
No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
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D6 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. 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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D7 CHECK FOR CORRECT RFA MODULE OPERATION
- Disconnect all the RFA module connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the RFA 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 RFA module. 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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