Lexus ES manuals

Lexus ES: Stop Lamp Relay Actuator Stuck Off (C13807F)

DESCRIPTION

Refer to DTC C13807E.

Click here

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C13807F

Stop Lamp Relay Actuator Stuck Off

When the voltage at the +BS terminal is between 10 V or more and the stop light control relay (stop light switch assembly) drive output (STPO) is on, a signal is not input to the STP terminal for 5 seconds or more.

  • Wire harness or connector
  • Stop light switch assembly
  • Skid control ECU (brake actuator assembly)
  • Rear combination light lens and body LH
  • Rear light assembly LH
  • Rear combination light lens and body RH
  • Rear light assembly RH
  • Center stop light set

WIRING DIAGRAM

Refer to DTC C13807E.

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CAUTION / NOTICE / HINT

NOTICE:

  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • After replacing the skid control ECU (brake actuator assembly), perform acceleration sensor zero point calibration and store system information memorization.

    Click here

HINT:

When DTC P057111, P057112 and/or P057113 are output together with DTC C13807F, inspect and repair the trouble areas indicated by DTC P057111, P057112 and/or P057113 first.

P057111: Click here

P057112: Click here

P057113: Click here

PROCEDURE

1.

CHECK STOP LIGHT OPERATION

(a) Check that the stop lights come on when the brake pedal is depressed.

OK:

The stop lights illuminate.

NG

GO TO STEP 6

OK

2.

PERFORM ACTIVE TEST USING TECHSTREAM (STOP LAMP RELAY)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Enter the following menus: Chassis / Brake/EPB / Active Test.

Chassis > Brake/EPB > Active Test

Tester Display

Measurement Item

Control Range

Restrict Condition

Diagnostic Note

Stop Lamp Relay

Stop light control relay (Stop light switch assembly)

Relay OFF / ON

Vehicle condition: Vehicle stopped

HINT:

To protect this Actuator and Solenoid, this test will only last 5 seconds.

-

Chassis > Brake/EPB > Active Test

Tester Display

Stop Lamp Relay

(d) According to the display on the Techstream, perform the Active Test and check the operation of the stop lights.

OK:

Stop lights turn on in accordance with the Active Test.

NG

GO TO STEP 4

OK

3.

CHECK HARNESS AND CONNECTOR (STOP LIGHT SIGNAL INPUT CIRCUIT)

(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

*a

Front view of wire harness connector

(to Skid Control ECU (Brake Actuator Assembly))

(b) Disconnect the A40 skid control ECU (brake actuator assembly) connector.

(c) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

A40-43 (STP2) - Body ground

Brake pedal depressed

11 to 14 V

OK

REPLACE BRAKE ACTUATOR ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.

INSPECT STOP LIGHT SWITCH ASSEMBLY (ACC TERMINAL VOLTAGE)

(a) Make sure that there is no looseness at the locking part and the connecting part of the connector.

OK:

The connector is securely connected.

*a

Component with harness connected

(Stop Light Switch Assembly)

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

A43-4 (ACC) - Body ground

Always

11 to 14 V

NG

REPLACE STOP LIGHT SWITCH ASSEMBLY

OK

5.

CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - BRAKE ACTUATOR ASSEMBLY)

(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

*a

Front view of wire harness connector

(to Skid Control ECU (Brake Actuator Assembly))

(b) Disconnect the A40 skid control ECU (brake actuator assembly) connector.

(c) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

A40-33 (STPO) - Body ground

Brake pedal depressed

11 to 14 V

OK

REPLACE BRAKE ACTUATOR ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.

CHECK STOP LIGHT OPERATION

(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

(b) Disconnect the A40 skid control ECU (brake actuator assembly) connector.

(c) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(d) Check that the stop lights come on when the brake pedal is depressed.

OK:

The stop lights illuminate.

OK

REPLACE BRAKE ACTUATOR ASSEMBLY

NG

7.

CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - REAR COMBINATION LIGHT LENS AND BODY LH)

(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

*a

Front view of wire harness connector

(to Rear Combination Light Lens and Body LH)

(b) Disconnect the A40 skid control ECU (brake actuator assembly) connector.

(c) Disconnect the R9 rear combination light lens and body LH connector.

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

R9-1 (STP) - Body ground

Brake pedal depressed

11 to 14 V

OK

REPLACE REAR COMBINATION LIGHT LENS AND BODY LH

NG

8.

CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - REAR COMBINATION LIGHT LENS AND BODY RH)

(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

*a

Front view of wire harness connector

(to Rear Combination Light Lens and Body RH)

(b) Disconnect the A40 skid control ECU (brake actuator assembly) connector.

(c) Disconnect the R9 rear combination light lens and body LH connector.

(d) Disconnect the R8 rear combination light lens and body RH connector.

(e) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

R8-1 (STP) - Body ground

Brake pedal depressed

11 to 14 V

OK

REPLACE REAR COMBINATION LIGHT LENS AND BODY RH

NG

9.

CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - REAR LIGHT ASSEMBLY LH)

(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

*a

Front view of wire harness connector

(to Rear Light Assembly LH)

(b) Disconnect the A40 skid control ECU (brake actuator assembly) connector.

(c) Disconnect the R9 rear combination light lens and body LH connector.

(d) Disconnect the R8 rear combination light lens and body RH connector.

(e) Disconnect the R11 rear light assembly LH connector.

(f) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

R11-5 (B) - Body ground

Brake pedal depressed

11 to 14 V

OK

REPLACE REAR LIGHT ASSEMBLY LH

NG

10.

CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - REAR LIGHT ASSEMBLY RH)

(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

*a

Front view of wire harness connector

(to Rear Light Assembly RH)

(b) Disconnect the A40 skid control ECU (brake actuator assembly) connector.

(c) Disconnect the R9 rear combination light lens and body LH connector.

(d) Disconnect the R8 rear combination light lens and body RH connector.

(e) Disconnect the R11 rear light assembly LH connector.

(f) Disconnect the R10 rear light assembly RH connector.

(g) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

R10-5 (B) - Body ground

Brake pedal depressed

11 to 14 V

OK

REPLACE REAR LIGHT ASSEMBLY RH

NG

11.

CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - CENTER STOP LIGHT SET)

(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

*a

Front view of wire harness connector

(to Center Stop Light Set)

(b) Disconnect the A40 skid control ECU (brake actuator assembly) connector.

(c) Disconnect the R9 rear combination light lens and body LH connector.

(d) Disconnect the R8 rear combination light lens and body RH connector.

(e) Disconnect the R11 rear light assembly LH connector.

(f) Disconnect the R10 rear light assembly RH connector.

(g) Disconnect the N52 center stop light set connector.

(h) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

N52-1 (B) - Body ground

Brake pedal depressed

11 to 14 V

OK

REPLACE CENTER STOP LIGHT SET

NG

12.

CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - REAR COMBINATION LIGHT LENS AND BODY LH)

(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

(b) Disconnect the A40 skid control ECU (brake actuator assembly) connector.

(c) Disconnect the A43 stop light switch assembly connector.

(d) Disconnect the R9 rear combination light lens and body LH connector.

(e) Disconnect the R8 rear combination light lens and body RH connector.

(f) Disconnect the R11 rear light assembly LH connector.

(g) Disconnect the R10 rear light assembly RH connector.

(h) Disconnect the N52 center stop light set connector.

(i) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A43-1 (OUT) - R9-1 (STP)

Always

Below 1 Ω

A43-1 (OUT) or R9-1 (STP) - Body ground

Always

10 kΩ or higher

OK

REPLACE STOP LIGHT SWITCH ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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