Pinpoint Test F: The Puddle Lamp(s) Are Inoperative
Interior Lighting
Pinpoint Tests
Pinpoint Test F: The Puddle Lamp(s) are Inoperative
Refer to Wiring Diagram Set 89, Interior Lamps for schematic and connector information. Diagrams By Number
Normal Operation
The Smart Junction Box (SJB) provides voltage to the puddle lamps through circuit CLN25 (VT). The puddle lamps have separate ground circuits. The LH exterior mirror is grounded through circuit GD133 (BK), and the RH exterior mirror is grounded through circuit GD145 (BK/BU).
- DTC B2A39 (Puddle Lamp Output Circuit Open) - an on-demand DTC that sets when the SJB detects an open on the puddle lamp output circuit.
- DTC B2A3A (Puddle Lamp Output Circuit Short To Ground) - a continuous and on-demand DTC that sets when the SJB detects a short to ground on the puddle lamp output circuit. This DTC also sets as a result when the SJB fuse 10 (15A) has failed or is removed.
This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Exterior mirror
- Puddle lamp
- SJB
PINPOINT TEST F: THE PUDDLE LAMP(S) ARE 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 PUDDLE LAMP OPERATION
NOTE: If only the courtesy lamps are inoperative, Go To Pinpoint Test A. Pinpoint Test A: The Courtesy Lamps Are Inoperative
- Open any door and observe the puddle lamps.
- Are both puddle lamps inoperative?
Yes
GO to F2.
No
GO to F3.
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F2 CHECK CIRCUIT CLN25 (VT) FOR AN OPEN
- Ignition OFF.
- Disconnect: SJB C2280c.
- NOTE: If the fuse fails, refer to the Wiring Diagrams to identify the possible causes of the circuit short.
- Connect a fused jumper wire between the SJB C2280c-12, circuit CLN25 (VT), harness side and battery positive.
- Do the puddle lamps illuminate?
Yes
REMOVE the jumper wire. GO to F5.
No
REMOVE the jumper wire. REPAIR the circuit. 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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F3 CHECK THE EXTERIOR MIRROR
NOTE: Make sure the suspect puddle lamp bulb is OK before continuing diagnostics.
- Disconnect: Suspect Exterior Mirror.
- NOTE: The courtesy lamps must be active during this test.
- Open any door.
- Measure the voltage between the suspect exterior mirror pins, harness side as follows:
- Is the voltage greater than 10 volts?
Yes
REPAIR or INSTALL a new exterior mirror in question. TEST the system for normal operation.
No
GO to F4.
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F4 CHECK CIRCUIT CLN25 (VT) FOR AN OPEN (INDIVIDUAL PUDDLE LAMP INOPERATIVE)
- Measure the voltage between the LH exterior mirror connector C516-5, circuit CLN25 (VT), harness side and ground; or between the RH exterior mirror connector C625-5, circuit CLN25 (VT), harness side and ground.
- Is the voltage greater than 10 volts?
Yes
For the LH exterior mirror, REPAIR circuit GD133 (BK) for an open. TEST the system for normal operation.
For the RH exterior mirror, REPAIR circuit GD145 (BK/BU) for an open. TEST the system for normal operation.
No
REPAIR circuit CLN25 (VT) for an open. TEST the system for normal operation.
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F5 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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