1.CHECK TURN SIGNAL LAMP BULB Check the applicable lamp bulb. Is the bulb normal? YES>>GO TO 2. NO>>Replace the bulb.
2.CHECK TURN SIGNAL LAMP OUTPUT VOLTAGE
CONSULT-III ACTIVE TEST

1. Turn the ignition switch OFF.
2. Disconnect the front combination lamp connector or the rear combination lamp connector.
3. Turn the ignition switch ON.
4. Select "FLASHER" of BCM (FLASHER) active test item.
5. With operating the test items, check the voltage between the BCM harness connector and the ground.
   Front

   Terminals | Test item | Voltage (Approx.)
   (+) | (−)
   BCM | Ground | FLASHER
   Connector | Terminal
   RH | M119 | 17 | RH |
   Off | 0 V
   LH | 18 | LH |
   Off | 0 V

   Rear

   Terminals | Test item | Voltage (Approx.)
   (+) | (−)
   BCM | Ground | FLASHER
   Connector | Terminal
   RH | M120 | 20 | RH |
   Off | 0 V
   LH | 25 | LH |
   Off | 0 V

Is the measurement value normal?
YES>>GO TO 3.
NO>>Replace the BCM.
3.CHECK TURN SIGNAL LAMP OPEN CIRCUIT

1. Turn the ignition switch OFF.
2. Disconnect the BCM connector.
3. Check continuity between the BCM harness connector and the front combination lamp or the rear combination lamp harness connector.
   Front combination lamp

   BCM | Front combination lamp | Continuity
   Connector | Terminal | Connector | Terminal
   RH | M119 | 17 | E58 | 6 | Existed
   LH | 18 | E28 | 6

   Rear combination lamp

   BCM | Rear combination lamp | Continuity
   Connector | Terminal | Connector | Terminal
   RH | M120 | 20 | B240 | 4 | Existed
   LH | 25 | B57 | 4

Does continuity exist?
YES>>GO TO 4.
NO>>Repair the harnesses or connectors.
4.CHECK TURN SIGNAL LAMP SHORT CIRCUIT
Check continuity between the BCM harness connector and the ground.
Front

BCM | Ground | Continuity
Connector | Terminal
RH | M119 | 17 | Not existed
LH | 18

Rear

BCM | Ground | Continuity
Connector | Terminal
RH | M120 | 20 | Not existed
LH | 25

Does continuity exist?
YES>>Repair the harnesses or connectors.
NO>>GO TO 5.
5.CHECK TURN SIGNAL LAMP GROUND OPEN CIRCUIT
Check continuity between the front combination lamp or the rear combination lamp and the ground.
Front combination lamp

Front combination lamp | Ground | Continuity
Connector | Terminal
RH | E58 | 2 | Existed
LH | E28 | 2

Rear combination lamp

Rear combination lamp | Ground | Continuity
Connector | Terminal
RH | B240 | 3 | Existed
LH | B57 | 3

Does continuity exist?
YES>>Replace the front combination lamp or the rear combination lamp.
NO>>Repair the harnesses or connectors.