Pinpoint Test F: The Luggage Compartment Lamp Is Inoperative
Interior Lighting
Pinpoint Tests
Pinpoint Test F: The Luggage Compartment Lamp Is Inoperative
Refer to Wiring Diagram Set 89, Interior Lamps for schematic and connector information. Diagrams By Number
Normal Operation
When the luggage compartment lid is open, circuit 1351 (TN) to the Smart Junction Box (SJB) opens. When the SJB identifies that the circuit is open, the SJB provides voltage to the luggage compartment lamp through circuit 707 (WH/YE). The luggage compartment lid ajar switch and the luggage compartment lamp are grounded through circuit 1205 (BK).
- DTC B1084 (Trunk Lamp Circuit Failure) - a continuous and on-demand DTC that sets when the SJB detects an open or short to ground on the luggage compartment lamp supply circuit.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Luggage compartment lamp
- Luggage compartment lid latch
- SJB
PINPOINT TEST F: THE LUGGAGE COMPARTMENT LAMP 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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F1 CHECK THE RECORDED DTCs FROM THE SJB SELF-TEST
- Check the recorded results from the SJB self-test.
- Is DTC B1084 present?
Yes
GO to F2.
No
GO to F6.
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F2 CHECK CIRCUIT 707 (WH/YE) FOR VOLTAGE
- Ignition OFF.
- Disconnect: Luggage Compartment Lamp C428.
- Ignition ON.
- Measure the voltage between the luggage compartment lamp C428-1, circuit 707 (WH/YE), harness side and ground.
- Is the voltage greater than 10 volts?
Yes
GO to F3.
No
GO to F4.
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F3 CHECK CIRCUIT 1205 (BK) FOR AN OPEN
- Ignition OFF.
- Disconnect: Negative Battery Cable.
- Measure the resistance between the luggage compartment lamp C428-2, circuit 1205 (BK), harness side and ground.
- Is the resistance less than 5 ohms?
Yes
INSTALL a new luggage compartment lamp. CLEAR the DTCs. REPEAT the self-test.
No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
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F4 CHECK CIRCUIT 707 (WH/YE) FOR A SHORT TO GROUND
- Ignition OFF.
- Disconnect: SJB C2280e.
- Measure the resistance between the luggage compartment lamp C428-1, circuit 707 (WH/YE), harness side and ground.
- Is the resistance greater than 10,000 ohms?
Yes
GO to F5.
No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
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F5 CHECK CIRCUIT 707 (WH/YE) FOR AN OPEN
- Measure the resistance between the luggage compartment lamp C428-1, circuit 707 (WH/YE), harness side and the SJB C2280e-15, circuit 707 (WH/YE), harness side.
- Is the resistance less than 5 ohms?
Yes
GO to F8.
No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
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F6 CHECK THE SJB LUGGAGE COMPARTMENT LID AJAR SWITCH
- Disconnect: Luggage Compartment Lid Latch C430.
- Does the luggage compartment lamp turn on?
Yes
INSTALL a new luggage compartment lid ajar switch. TEST the system for normal operation.
No
GO to F7.
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F7 CHECK CIRCUIT 1351 (TN) FOR A SHORT TO GROUND
- Ignition OFF.
- Disconnect: SJB C2280c.
- Measure the resistance between the luggage compartment lid latch C430-1, circuit 1351 (TN), harness side and ground.
- Is the resistance greater than 10,000 ohms?
Yes
GO to F8.
No
REPAIR the circuit. TEST the system for normal operation.
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F8 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. CLEAR the DTCs. REPEAT the self-test.
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