Operation CHARM: Car repair manuals for everyone.

Test Q: The LH/RH Turn Signal Indicator Is Never/Always On

PINPOINT TEST Q: THE LH/RH TURN SIGNAL INDICATOR IS NEVER/ALWAYS ON


Q1-Q3:






Q4-Q5:






Normal Operation
When the multifunction switch is in the LH or RH TURN position, a message is sent to the instrument cluster from the smart junction box (SJB) over the medium speed controller area network (CAN) communication bus. The instrument cluster upon receipt of the LH or RH turn message, flashes the LH or RH turn signal indicator on and off.

Possible Causes
- SJB
- Instrument cluster