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### DTC C1249/49 Open in Stop Light Switch Circuit

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## DESCRIPTION

This circuit recognizes brake operation by sending a stop light signal to the skid control ECU.

DTC No.1 | DTC Detection Condition | Trouble Area

C1249/49

Both conditions continue for at least 0.3 seconds:

1. IG1 terminal voltage is between 10 and 14 V
2. Open in stop light switch circuit

1. Stop light bulb
2. Stop light switch assembly
3. Stop light switch circuit

## WIRING DIAGRAM

## INSPECTION PROCEDURE

1.CHECK STOP LIGHT SWITCH OPERATION

1. Check that the stop light illuminates when the brake pedal is depressed, and turns off when the brake pedal is released.

   OK:

     Condition | Stop Light Condition
     Brake pedal depressed | Illuminates
     Brake pedal released | Turns off

| NG |

Go to step 4

OK |

2.CHECK WIRE HARNESS (SKID CONTROL ECU - STOP LIGHT SWITCH ASSEMBLY)

1. Disconnect the S2 ECU connector.

1. Disconnect the S14 stop light switch connector.

1. Measure the resistance of the wire harness side connectors.

   Standard resistance:

     Tester Connection | Specified Condition
     S2-10 (STP) - S14-1 | Below 1 Ω

| NG |

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK |

3.CHECK IF DTC OUTPUT RECURS

1. Clear the DTCs.

1. Drive the vehicle at approximately 30 km/h (19 mph) or more for 60 seconds or more.

1. Check for DTCs.

   Result
   Result | Proceed to
   DTC is output | A
   DTC is not output | B

| B |

END

A |

REPLACE BRAKE ACTUATOR ASSEMBLY

4.INSPECT STOP LIGHT SWITCH ASSEMBLY

1. Disconnect the switch connector.

1. Measure the resistance of the stop light switch.

   Standard resistance:

     Tester Connection | Switch Condition | Specified Condition
     1 - 2 | Pin not pushed | Below 1 Ω
     1 - 2 | Pin pushed | 10 kΩ or higher
     3 - 4 | Pin not pushed | 10 kΩ or higher
     3 - 4 | Pin pushed | Below 1 Ω

| NG |

REPLACE STOP LIGHT SWITCH ASSEMBLY

OK |

5.CHECK WIRE HARNESS (SKID CONTROL ECU - BATTERY)

1. Disconnect the S2 ECU connector.

1. Measure the voltage of the wire harness side connector.

   Standard voltage:

     Tester Connection | Condition | Specified Condition
     S2-10 (STP) - Body ground | Brake pedal depressed | 8 to 14 V
     S2-10 (STP) - Body ground | Brake pedal released | Below 1 V

| NG |

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK |

6.CHECK IF DTC OUTPUT RECURS

1. Clear the DTCs.

1. Drive the vehicle at approximately 30 km/h (19 mph) or more for 60 seconds or more.

1. Check for DTCs.

   Result
   Result | Proceed to
   DTC is output | A
   DTC is not output | B

| B |

END

A |

REPLACE BRAKE ACTUATOR ASSEMBLY