Toyota Sienna Service Manual: Parking brake system

Parking brake

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Problem symptoms table

Use the table below to help you find the cause of the problem. The numbers indicate the likelihood of the cause in the descending order. Check each part in the order shown. Replace these parts ...

Other materials:

Open or Short Circuit in ABS Solenoid Relay Circuit
DESCRIPTION The ABS solenoid relay is built in the brake actuator assembly. This relay supplies power to each ABS solenoid. If the initial check is OK, after the ignition switch is turned to the ON position, the relay goes on. WIRING DIAGRAM Refer to DTCs C0226/21, C0236/22, C0246/23 ...

Terminals of ECU
1. FOLD SEAT CONTROL ECU LH Disconnect the fold seat control ECU connectors. Measure the voltage and resistance of the wire harness side connectors. If the result is not as specified, there may be a malfunction on the wire harness side.  Reconnect the fold seat control E ...

Road test
1. PROBLEM SYMPTOM CONFIRMATION (a) Based on the result of the customer problem analysis, try to reproduce the symptoms. If the problem is that the transaxle does not shift up, shift down, or the shift point is too high or too low, conduct the following road test referring to the automatic shi ...