Pinpoint Test K: The Turn Signal Lamps Are Always On

K1 CHECK THE STOPLAMPS
- Key in ON position.
- Apply and release the brake pedal while observing the rear lamps.
- Do the stoplamps operate correctly?
- Yes : GO to K2.
- No : REFER to STOPLAMPS to continue diagnosis of the stoplamps.
K2 DETERMINE THE CONDITION
- Use the recorded results from the GEM self-test.
- Are any DTCs present?
- Yes : If DTC B2281 or B2282, GO to K3.
  All other DTCs, REFER to the GENERIC ELECTRONIC MODULE (GEM) DIAGNOSTIC TROUBLE CODE (DTC) CHART .
- No : GO to K5.
K3 CHECK THE MULTIFUNCTION SWITCH
- Key in OFF position.
- Disconnect: Multifunction Switch C202.
- Key in ON position.
- Do the turn lamps continue to flash?
- Yes : GO to K4.
- No : INSTALL a new multifunction switch. REFER to STEERING COLUMN SWITCHES . TEST the system for normal operation.
K4 CHECK CIRCUIT 91S-LG1 (BK/YE) (LH TURN LAMPS) OR 91S-LG2 (BK/BU) (RH TURN LAMPS) FOR A SHORT TO GROUND
- Key in OFF position.
- Disconnect: GEM C201d.
- Measure the resistance between the multifunction switch C202-1, circuit 91S-LG1 (BK/YE), harness side and ground; or between the multifunction switch C202-3, circuit 91S-LG2 (BK/BU), harness side and ground.
  
  Fig 1: Checking Circuit 91S-LG1 (BK/YE) (LH Turn Lamps) Or 91S-LG2 (BK/BU) (RH Turn Lamps) For A Short To Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance greater than 10,000 ohms?
- Yes : GO to K6.
- No : REPAIR the circuit in question. TEST the system for normal operation.
K5 CHECK CIRCUIT 49S-LG4 (BU/RD) OR 49S-LG5 (BU/WH) FOR A SHORT TO POWER
- Key in OFF position.
- Disconnect: GEM C201c.
- Do the turn lamps continue to illuminate?
- Yes : REPAIR the circuit in question. TEST the system for normal operation.
- No : GO to K6.
K6 CHECK FOR CORRECT GEM OPERATION
- Disconnect the GEM connectors.
- Check for:
  - Corrosion
  - Pushed-out pins
- Connect the GEM 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 GEM. REFER to MULTIFUNCTION ELECTRONIC MODULES . 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. TEST the system for normal operation.