Circuit/System Testing
- Ignition OFF, disconnect the harness connectors at the components listed below.
- S48C Multifunction Switch 1 - Instrument Panel
- S48D Multifunction Switch 2 - Instrument Panel
- Ignition ON, place the S36 Instrument Panel Dimmer Switch in the HIGH position for high backlighting intensity.
- Verify a test lamp illuminates between each control circuit terminal listed below and ground.
- S48C Multifunction Switch 1 - Instrument Panel terminal 3
- S48D Multifunction Switch 2 - Instrument Panel terminal 3
- If the test lamp does not illuminate
- Ignition OFF, disconnect the X1 harness connector at the K9 Body Control Module.
- Test for infinite resistance between the control circuit and ground.
- If less than infinite resistance, repair the short to ground on the circuit.
- If infinite resistance
- Test for less than 2 Ω in the control circuit end to end.
- If 2 Ω or greater, repair the open/high resistance in the circuit.
- If less than 2 Ω, replace the K9 Body Control Module.
- If the test lamp illuminates
- Place the S36 Instrument Panel Dimmer Switch in the LOW position for low backlighting intensity.
- Verify a test lamp does not illuminate at FULL intensity between the control circuit terminal 3 and ground.
- If the test lamp illuminates at full intensity
- Ignition OFF, disconnect the X1 harness connector at the K9 Body Control Module, ignition ON.
- Test for less than 1 V between the control circuit terminal and ground.
- If 1 V or greater, repair the short to voltage on the circuit.
- If less than 1 V, replace the K9 Body Control Module.
- If the test lamp does not illuminate at full intensity
- Test or replace the appropriate S48 Multifunction Switch - Instrument Panel.
NOTE:
The test lamp in the following step will illuminate at LOW intensity. This is normal circuit operation and does not indicate a circuit malfunction.