Pinpoint Test K: The Luggage Compartment Lamp Is Inoperative/Does Not Operate Correctly
Interior Lighting
Pinpoint Tests
Pinpoint Test K: The Luggage Compartment Lamp Is Inoperative/Does Not Operate Correctly
Refer to Wiring Diagram Set 89, Interior Lamps for schematic and connector information. Diagrams By Number
Refer to Wiring Diagram Set 117, Remote Keyless Entry and Alarm for schematic and connector information. Diagrams By Number
Normal Operation
The Smart Junction Box (SJB) supplies voltage to the luggage compartment lamp on circuit CLN09 (YE/GN). The luggage compartment lamp ground is a series of circuits that is comprised of circuits GD147 (BK/VT), CLN13 (WH/BU), and the luggage compartment ajar switch (part of the luggage compartment lid latch). When the luggage compartment lid is ajar, the ajar switch closes and completes the ground path by connecting circuit GD147 (BK/VT) to circuit CLN13 (WH/BU).
- DTC B1331 (Decklid Ajar Rear Door Circuit Failure) - an on-demand DTC that sets when the SJB detects an open from the luggage compartment ajar input circuit to the SJB.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Luggage compartment lamp
- Luggage compartment lid latch
PINPOINT TEST K: THE LUGGAGE COMPARTMENT LAMP IS INOPERATIVE/DOES NOT OPERATE CORRECTLY
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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K1 CHECK THE LUGGAGE COMPARTMENT LATCH
- Open the luggage compartment using the Integrated Keyhead Transmitter (IKT) or the luggage compartment release switch on the instrument panel.
- Does the luggage compartment open?
Yes
GO to K2.
No
REFER to Locks.
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K2 CHECK THE LUGGAGE COMPARTMENT AJAR PID
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: SJB DataLogger.
- Monitor the SJB luggage compartment ajar switch PID (DECKLID) while opening and closing the luggage compartment.
- Does the luggage compartment ajar switch PID value agree with the luggage compartment positions?
Yes
GO to K5.
No
GO to K3.
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K3 CHECK THE LUGGAGE COMPARTMENT AJAR SWITCH
- Disconnect: Luggage Compartment Lid Latch C4223.
- Enter the following diagnostic mode on the scan tool: SJB DataLogger.
- Monitor the SJB luggage compartment ajar switch PID (DECKLID).
- Connect a jumper wire between the luggage compartment latch C4223-1, circuit CPL58 (GY/OG), harness side, and the luggage compartment latch C4223-4, circuit GD147 (BK/VT), harness side.
- Does the luggage compartment ajar switch PID indicate ajar with the jumper wire removed and closed with the jumper wire connected?
Yes
REMOVE the jumper wire. INSTALL a new luggage compartment lid latch. TEST the system for normal operation.
No
REMOVE the jumper wire. GO to K4.
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K4 CHECK CIRCUIT CPL58 (GY/OG) FOR AN OPEN AND SHORT TO GROUND
- Ignition OFF.
- Disconnect: SJB C2280c.
- Measure the resistance between the luggage compartment lid latch C4223-1, circuit CPL58 (GY/OG), harness side and the SJB C2280c-16, circuit CPL58 (GY/OG), harness side; and between the luggage compartment lid latch C4223-1, circuit CPL58 (GY/OG), harness side and ground.
- Is the resistance less than 5 ohms between the luggage compartment lid latch and the SJB, and greater than 10,000 ohms between the luggage compartment lid latch and ground?
Yes
GO to K8.
No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
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K5 CHECK CIRCUIT CLN09 (YE/GN) FOR AN OPEN
NOTE: Make sure all other demand lamps are operating before continuing this pinpoint test.
- Disconnect: Luggage Compartment Lamp C428.
- Ignition ON.
- Measure the voltage between the luggage compartment lamp C428-1, circuit CLN09 (YE/GN), harness side and ground.
- Is the voltage greater than 10 volts?
Yes
GO to K6.
No
REPAIR the circuit. TEST the system for normal operation.
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K6 CHECK THE LUGGAGE COMPARTMENT LATCH
- Disconnect: Luggage Compartment Lid Latch C4223.
- Connect: Luggage Compartment Lamp C428.
- Monitor the luggage compartment lamp.
- Connect a jumper wire between the luggage compartment latch C4223-2, circuit CLN13 (WH/BU), harness side, and the luggage compartment latch C4223-4, circuit GD147 (BK/VT), harness side.
- Is the luggage compartment lamp illuminated with the jumper wire connected and off with it disconnected?
Yes
REMOVE the jumper wire. INSTALL a new luggage compartment lid latch. TEST the system for normal operation.
No
REMOVE the jumper wire. GO to K7.
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K7 CHECK CIRCUIT CLN13 (WH/BU) FOR AN OPEN AND SHORT TO GROUND
- Ignition OFF.
- Disconnect: Luggage Compartment Lamp C428.
- Measure the resistance between the luggage compartment lid latch C4223-2, circuit CLN13 (WH/BU), harness side and the luggage compartment lamp C428-2, circuit CLN13 (WH/BU), harness side; and between the luggage compartment lid latch C4223-2, circuit CLN13 (WH/BU), harness side and ground.
- Is the resistance less than 5 ohms between the luggage compartment lid latch and the luggage compartment lamp, and greater than 10,000 ohms between the luggage compartment lid latch and ground?
Yes
INSTALL a new luggage compartment lamp. TEST the system for normal operation.
No
REPAIR the circuit. TEST the system for normal operation.
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K8 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. TEST the system for normal operation.
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