Pinpoint Test F: One Or More Switch Illumination Is Inoperative

Instrument Cluster and Panel Illumination

Pinpoint Tests


Pinpoint Test F: One Or More Switch Illumination is Inoperative

Refer to Wiring Diagram Set 71, Cluster and Panel Illumination for schematic and connector information. Diagrams By Number

Normal Operation

When the parking lamps are on, the Smart Junction Box (SJB) sends a pulse-width modulated voltage to the dimmable components.

When the accessory delay relay is energized, voltage is supplied to the door lock control switches and the window control switches.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors
- Convertible top switch
- Message center switch (if equipped)
- Headlamp switch
- Hazard flasher lamp switch
- Floor shifter (automatic transmission)
- Door lock control switch
- Window control switch



PINPOINT TEST F: ONE OR MORE SWITCH ILLUMINATION 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 RESULTS FROM THE SJB SELF-TEST


- Check the recorded DTCs from the SJB self-test.
- Are any DTCs present?

Yes
REFER to DTC Charts. Instrument Cluster and Panel Illumination

No
GO to F2.

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F2 CHECK THE VOLTAGE TO THE SINGLE ILLUMINATION SOURCE


NOTE: If the headlamp switch illumination is the inoperative source, unplug the headlamp switch connector to measure the illumination circuit voltage. Unplugging the connector causes the SJB to turn the exterior lights on by default for 10 minutes, so it is unnecessary to turn on the headlamp switch.

NOTE: For a door lock control switch, window control switch or roof opening panel control switch, make sure the door locks, the power windows and roof opening panel operate correctly before continuing diagnostics.

- Ignition OFF.
- Disconnect: Inoperative Illumination Source.
- Ignition ON.
- For dimmable components, place the headlamp switch to the PARKING LAMPS ON position and rotate the instrument panel dimmer switch to the full illumination position.
- Measure the voltage between the inoperative illuminated component, harness side and ground as follows:









- Is the voltage greater than 10 volts?

Yes
For the convertible top switch, INSTALL a new convertible top switch. REFER to Convertible Top. TEST the system for normal operation.

For a door lock control switch, INSTALL a new door lock switch. REFER to Doors, Hood and Trunk &/or Locks. TEST the system for normal operation.

For a floor shifter, INSTALL a new floor shifter. REFER to Brake Shift Interlock Actuator in Automatic Transmission/Transaxle. TEST the system for normal operation.

For all other components, GO to F3.

No
REPAIR the circuit in question for an open. TEST the system for normal operation.

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F3 CHECK THE VOLTAGE TO THE SINGLE ILLUMINATION SOURCE USING THE CONNECTOR GROUND


- Measure the voltage between the inoperative illuminated component connector, harness side as follows:









- Is the voltage greater than 10 volts?

Yes
INSTALL a new component in question. TEST the system for normal operation.

No
REPAIR the ground circuit in question for an open. TEST the system for normal operation.

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