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Toyota Sienna Service Manual: Problem symptoms table

If there are no DTCs output but the problem still occurs, check the circuits for each problem symptom in the order given in the table below and proceed to the relevant troubleshooting page.

NOTICE: When replacing the brake actuator assembly, sensor, etc., turn the ignition switch off.

HINT: Inspect the fuse and relay before investigating the suspected areas as shown in the table below. Inspect each malfunction circuit in numerical order for the corresponding symptom.

Anti-lock brake system:

Anti-lock brake system

Terminals of ecu

Test mode procedure
1. SPEED SENSOR SIGNAL CHECK (WHEN USING SST CHECK WIRE): HINT: If the ignition switch is turned from the ON to the ACC or LOCK position during Test Mode, the DTCs of the signal check functio ...

Diagnosis system
1. DESCRIPTION (a) Release the parking brake pedal. (b) Check the warning lights. When ignition switch is turned ON, check that the ABS warning light and brake warning light come on for 3 ...

Other materials:

Air conditioning pressure sensor
ON-VEHICLE INSPECTION 1. INSPECT A/C PRESSURE SENSOR (a) Install the manifold gauge set. (b) Disconnect the connector from the A/C pressure sensor. (c) Connect the three 1.5 V dry cell batteries' positive (+) lead to terminal 3 and the negative (-) lead to terminal 1. (d) Connect t ...

Wireless Door Lock Tuner Circuit Malfunction
DTC B1242 Wireless Door Lock Tuner Circuit Malfunction DESCRIPTION When a RDA signal is not input to the door control receiver within 1 second after the multiplex network body ECU outputs a PRG signal, this DTC is set. DTC No. DTC Detection Condition Suspected Area ...

Disassembly
1. REMOVE INDICATOR LIGHT WIRE SUB-ASSEMBLY (a) Remove the indicator light wire sub assembly from the position indicator light guide. 2. REMOVE POSITION INDICATOR LIGHT BULB (a) Remove the shift position indicator light bulb from the indicator light wire sub-assembly 3. REMOVE POSITION IND ...

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