Last Modified: 11-29-2007 1.6 C
Service Category: Brake Section: Brake Control/Dynamic Control System
Model Year: 2008 Model: Sequoia Doc ID: RM000001P4O005X
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: DESCRIPTION (2008 Sequoia)

DTC

C1310/11

Open or Short in Active Brake Booster Circuit

DESCRIPTION

Operates when booster's negative pressure is insufficient and allows for a stable braking control.

DTC Code

DTC Detection Condition

Trouble Area

C1310/11

Open or short in active brake booster solenoid circuit.

  • Brake booster
  • Active brake booster solenoid circuit
  • VSC actuator (skid control ECU)

WIRING DIAGRAM



INSPECTION PROCEDURE

NOTICE:

When replacing the VSC actuator assembly, perform the zero point calibration BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: CALIBRATION (2008 Sequoia) .

HINT:

When the brake warning light illuminates, inspect and repair the trouble areas of the brake booster vacuum line first.

PROCEDURE

1.

CHECK BRAKE BOOSTER ASSEMBLY


(a) Disconnect the A20 booster connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 (BST) - 4 (BSTP)

Always

1.1 to 1.7 Ω

OK

2.

CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - ACTIVE BRAKE BOOSTER)


(a) Confirm that the skid control ECU connector and active brake booster connector are properly connected.

(b) Disconnect the A19 ECU connector.

(c) Disconnect the A20 booster connector.

(d) Inspect both the connector case and the terminal for deformation and corrosion.

OK:

No deformation or corrosion.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A19-17 (BST) - A20-3 (BST)

Always

Below 1 Ω

A19-17 (BST) - Body ground

Always

10 kΩ or higher

A19-31 (BSTP) - A20-4 (BSTP)

Always

Below 1 Ω

A19-31 (BSTP) - Body ground

Always

10 kΩ or higher

OK