Turn signal failure
Here's what the service manual has to say
D1 DETERMINE IF ANY TURN LAMP IS ALWAYS ON
- Ignition ON.
- Activate the hazard lamp function.
- Observe the rear turn lamps.
Is any turn lamp continuously illuminated (not flashing)?
Yes GO to D2 No GO to D3
D2 CHECK THE FRONT TURN LAMP VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE
- Deactivate the hazard lamp function.
- Ignition OFF.
- Disconnect BCM C2280E .
- Ignition ON.
Does the turn lamp in question continue to illuminate?
Yes REPAIR the affected circuit. No GO to D8
D8 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
- Disconnect and inspect all BCM connectors.
- Repair:
- corrosion (install new connector or terminals – clean module pins)
- damaged or bent pins – install new terminals/pins
- pushed-out pins – install new pins as necessary
- Reconnect the BCM connectors. Make sure they seat and latch correctly.
- Operate the system and determine if the concern is still present.
Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation). No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
BCM is behind the front passenger kick panel









