Pinpoint Test D: The Dome Defeat Feature Is Inoperative
Interior Lighting
Pinpoint Tests
Pinpoint Test D: The Dome Defeat Feature Is Inoperative
Refer to Wiring Diagram Set 71 (Escape/Mariner, Escape Hybrid/Mariner Hybrid), Cluster and Panel Illumination for schematic and connector information. Diagrams By Number
Normal Operation
The Smart Junction Box (SJB) sends a voltage signal to the instrument panel dimmer switch through circuit CLN27 (WH/BN) to monitor the dome defeat input request. When the instrument panel dimmer switch is in the DOME DEFEAT position, the signal is routed to ground indicating a request for the dome defeat feature.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Instrument panel dimmer switch
- SJB
PINPOINT TEST D: THE DOME DEFEAT FEATURE IS INOPERATIVE
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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D1 BYPASS THE INSTRUMENT PANEL DIMMER SWITCH
- Ignition OFF.
- Disconnect: Instrument Panel Dimmer Switch C2065.
- Connect a fused jumper wire between the instrument panel dimmer switch C2065-2, circuit CLN27 (WH/BN), harness side and the instrument panel dimmer switch C2065-4, circuit CLN04 (BU/BN), harness side.
- Close and then open any door.
- Do the courtesy lamps illuminate?
Yes
REMOVE the jumper wire. GO to D2.
No
REMOVE the jumper wire. INSTALL a new instrument panel dimmer switch. TEST the system for normal operation.
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D2 CHECK THE DOME DEFEAT INPUT CIRCUIT FOR AN OPEN
- Disconnect: SJB C2280b.
- Measure the resistance between the instrument panel dimmer switch C2298-2, circuit CLN27 (WH/BN), harness side and the SJB C2280b-36, circuit CLN27 (WH/BN), harness side.
- Is the resistance less than 5 ohms?
Yes
GO to D3.
No
REPAIR circuit CLN27 (WH/BN) for an open. TEST the system for normal operation.
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D3 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. RUN the on-demand self-test (required to clear certain DTCs). CORRECT any unresolved DTCs. CLEAR all DTCs. TEST the system for normal operation.
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