Pinpoint Test M: The Turn Signal Lamps Are Always On

WARNING: This page is about a different car, the 2006 Mercury Montego, 2006 Ford Freestyle, and 2006 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.

M1 CHECK THE MULTIFUNCTION SWITCH
- Key in OFF position.
- Disconnect: Multifunction Switch C202a.
- Key in ON position.
- Do the turn signals continue to flash on and off?
Yes: GO to M2.

No: INSTALL a new multifunction switch.

REFER to REMOVAL AND INSTALLATION . CLEAR the DTCs. REPEAT the self-test.
M2 CHECK CIRCUIT 1393 (LB/RD) OR CIRCUIT 1392 (LG/OG) FOR A SHORT TO GROUND
- Key in OFF position.
- Disconnect: SJB C2280d.
- Measure the resistance between the multifunction switch C202a-6 (LH turn signal), circuit 1393 (LB/RD), harness side and ground; or between the multifunction switch C202a-7 (RH turn signal), circuit 1392 (LG/OG), harness side and ground.
  
  Fig 1: Checking Circuit 1393 (LB/RD) Or Circuit 1392 (LG/OG)
  Courtesy of FORD MOTOR CO.
- Is the resistance greater than 10,000 ohms?
Yes: GO to M3.

No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
M3 CHECK FOR CORRECT SJB OPERATION
- Disconnect all the SJB connectors.
- Check for:
  - corrosion
  - pushed-out pins
- Connect all the SJB connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
Yes: INSTALL a new SJB. REFER to REMOVAL AND INSTALLATION . TEST the system for normal operation.

No: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.