Diagnosis Procedure
- CHECK OUTPUT 1 - 5 SYSTEM CIRCUIT FOR OPEN
- Turn the ignition switch OFF.
- Disconnect the BCM and combination switch connectors.NOTE: BCM connector disconnects M123 only.
- Check continuity between BCM harness connector and combination switch harness connector.
CONTINUITY REFERENCE CHARTSystem BCM Combination switch Continuity Connector Terminal Connector Terminal OUTPUT 1 M123 143 M33 12 Existed OUTPUT 2 144 14 OUTPUT 3 145 5 OUTPUT 4 146 2 OUTPUT 5 142 8 Does continuity exist?
YES: GO TO 2.
NO: Repair the harnesses or connectors.
- CHECK OUTPUT 1 - 5 SYSTEM CIRCUIT FOR SHORT
Check for continuity between BCM harness connector and ground.
CONTINUITY REFERENCE CHARTSystem BCM Ground Continuity Connector Terminal OUTPUT 1 M123 143 Not existed OUTPUT 2 144 OUTPUT 3 145 OUTPUT 4 146 OUTPUT 5 142 Does continuity exist?
YES: Repair the harnesses or connectors.
NO: GO TO 3.
- CHECK COMBINATION SWITCH INTERNAL CIRCUIT
- Connect the combination switch connector.
- Turn ON any switch in the system that is malfunctioning.
- Check voltage between combination switch harness connector and ground.
NOTE: Check that the combination switch outputs a signal from combination switch input system.VOLTAGE REFERENCE CHARTSystem Terminals Value (Approx.) (+) (-) Combination switch Ground Connector Terminal OUTPUT 1 M33 12
1.4 VOUTPUT 2 14 OUTPUT 3 5 OUTPUT 4 2 OUTPUT 5 8 Is the measurement value normal when any of the switches is turned ON?
YES: Replace BCM. Refer to "EXPLODED VIEW ".
NO: Replace the combination switch.