Dtc C1249/49 Open In Stop Light Switch Circuit

Brake. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
Brake Control. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK STOP LIGHT OPERATION

CHECK HARNESS AND CONNECTOR (STP VOLTAGE)

RECONFIRM DTC

INSPECT STOP LIGHT SWITCH ASSEMBLY

DTC C1249/49 Open in Stop Light Switch Circuit


DESCRIPTION

The skid control ECU detects the brake operating conditions through a signal transmitted by the stop light switch. The skid control ECU incorporates an open circuit detection circuit. This DTC is set under either of the following conditions:
  1. An open is detected in the stop light signal input line when the stop light switch is off.
  2. An open is detected in the stop light circuit lead to the ground when the stop light switch is off.

DTC No.
DTC Detection Condition
Trouble Area
C1249/49
When IG1 terminal voltage is 9.5 to 18.5 V, open circuit of stop light switch continues for 3 seconds or more.
  1. STOP fuse
  2. Stop light switch
  3. Stop light switch circuit
  4. Stop light control relay circuit
  5. Brake actuator (Skid control ECU)

WIRING DIAGRAM


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Brake Control.Anti-Lock Brake System. Dtc C1249/49 Open In Stop Light Switch Circuit


INSPECTION PROCEDURE

NOTICE:
Inspect the fuse for circuits related to this system before performing the following inspection procedure.
1.CHECK STOP LIGHT OPERATION

  1. Check that the stop lights come on when the brake pedal is depressed, and go off when the brake pedal is released.

    OK:
    Condition
    		Illumination Condition
    Brake pedal depressed
    		ON
    Brake pedal released
    		OFF


NG
Go to step 4
OK


2.CHECK HARNESS AND CONNECTOR (STP VOLTAGE)


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Brake Control.Anti-Lock Brake System. Dtc C1249/49 Open In Stop Light Switch Circuit

  1. Disconnect the A27 ECU connector.

  1. Measure the voltage according to the value(s) in the table below.

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    A27-10 (STP) - Body ground
    		Brake pedal depressed
    		8 to 14 V
    A27-10 (STP) - Body ground
    		Brake pedal released
    		Below 1.5 V


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.RECONFIRM DTC

  1. Clear the DTC (RAV4_ACA30 RM000000ONJ02UX.html).

  1. Check if the same DTC is output (RAV4_ACA30 RM000000ONJ02UX.html).

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


B
USE SIMULATION METHOD TO CHECK (RAV4_ACA30 RM00000135201PX.html)
A

REPLACE BRAKE ACTUATOR ASSEMBLY (RAV4_ACA30 RM000001XV200OX.html)

4.INSPECT STOP LIGHT SWITCH ASSEMBLY


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Brake Control.Anti-Lock Brake System. Dtc C1249/49 Open In Stop Light Switch Circuit

  1. Remove the stop light switch (RAV4_ACA30 RM000003P9J002X.html).

  1. Measure the resistance according to the value(s) in the table below.

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


NG
REPLACE STOP LIGHT SWITCH ASSEMBLY (RAV4_ACA30 RM000003P9J002X.html)
OK

GO TO LIGHTING SYSTEM (STOP LIGHT SWITCH CIRCUIT) (RAV4_ACA30 RM000001OCJ00QX.html)