Toyota RAV4 manuals

Toyota Sienna Service Manual: Open in Pump Motor Circuit

DTC C1251/51 Open in Pump Motor Circuit

DESCRIPTION

The motor relay (semiconductor relay) is housed in the brake actuator assembly and drives the pump motor based on a signal from the skid control ECU.

Open in Pump Motor Circuit

WIRING DIAGRAM

Refer to DTCs C0273/13 and C0274/14 (See page BC-31).

INSPECTION PROCEDURE

HINT: After step 1 is complete, start the inspection from step 2 when using the intelligent tester, and from step 3 when not using the intelligent tester.

1 INSPECT SKID CONTROL ECU (GND TERMINAL CONTINUITY)

 INSPECT SKID CONTROL ECU (GND TERMINAL CONTINUITY)

(a) Disconnect the skid control ECU connector.

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

Standard resistance

2 PERFORM ACTIVE TEST BY INTELLIGENT TESTER (ABS MOTOR RELAY)

(a) Reconnect the skid control ECU connector.

(b) Connect the intelligent tester to the DLC3.

(c) Turn the ignition switch to the ON position and turn the intelligent tester main switch on.

(d) Start the engine.

(e) Select the ACTIVE TEST mode on the intelligent tester.

ABS:

(f) Check operating sound of the ABS motor when operating it with the intelligent tester.

OK: The operating sound of the ABS motor is heard.

3 RECONFIRM DTC

(a) Clear the DTCs (See page BC-10).

(b) Start the engine.

(c) Drive the vehicle at the speed of 6 km/h (4 mph) or more.

(d) Check that the same DTC is recorded (See page BC- 10).

HINT:

Result

HINT:

REPLACE BRAKE ACTUATOR ASSEMBLY

Open in Stop Light Switch Circuit
DTC C1249/49 Open in Stop Light Switch Circuit DESCRIPTION This skid control ECU inputs the stop light switch signal and detects the status of brake operation. The skid control ECU has an open ...

ABS Warning Light Remains ON
DESCRIPTION If any of the following is detected, the ABS warning light remains on. The skid control ECU connectors are disconnected from the skid control ECU. There is a malfunction in the s ...

Other materials:

Removal
1. Remove windshield wiper motor assembly hint: (see page ww-4) 2. Remove front outer cowl top panel subassembly (see page em-27) 3. Drain engine coolant (see page co-6) 4. Remove v-bank cover sub-assembly (see page em-28) 5. Remove no. 2 Air cleaner inlet (see page em- 28) 6. Remove no. 1 ...

SFR Solenoid Circuit
DESCRIPTION This solenoid goes on when signals are received from the ECU and controls the pressure acting on the wheel cylinders to control the braking force. WIRING DIAGRAM INSPECTION PROCEDURE 1 RECONFIRM DTC HINT: This code is detected when a problem is determined in the bra ...

Installation
1. INSTALL TRANSMISSION WIRE (a) Coat the O-ring of the transmission wire connector with ATF and install it. (b) Install the transmission wire with the bolt. Torque: 5.4 N*m (55 kgf*cm, 48 ft.*lbf) 2. CONNECT TRANSMISSION WIRE (a) Coat the O-ring of the ATF temperature sensor with ...

В© 2011-2024 Copyright www.tsienna.net