Toyota Sienna Service Manual: Terminals of ECU
1. POSITION CONTROL ECU AND SWITCH ASSEMBLY (POWER SEAT CONTROL SWITCH AND ECU)
- Disconnect the P58 and P59 connectors.
- Check the voltage of each terminal of the wire harness side connectors.
If the result is not as specified, there may be a malfunction in the wire harness side.
- Check the resistance of each terminal of the wire harness side connectors.
If the result is not as specified, there may be a malfunction in the wire harness side.
- Reconnect the P58 and P59 connectors.
- Check the voltage of each terminal of the connectors.
If the result is not as specified, the position control ECU and switch assembly may be malfunctioning.
2. OUTER MIRROR CONTROL ECU LH
- Disconnect the outer mirror control ECU LH connector.
- Check the voltage of each terminal of the wire harness side connectors.
If the result is not as specified, there may be a malfunction in the wire harness side.
- Check the resistance of each terminal of the wire harness side connector.
If the result is not as specified, there may be a malfunction in the wire harness side.
- Reconnect the outer mirror control ECU LH connector.
- Check the voltage of each terminal of the connectors.
If the result is not as specified, the outer mirror control ECU LH may be malfunctioning.
Problem symptoms table
HINT:
Inspect the fuse and relay before confirming the suspected
areas in the table below.
Inspect each suspected area in numerical order for the
corresponding symptom.
If the ...
Diagnosis system
1. DESCRIPTION
Front power seat control system data can be read
through the Data Link Connector 3 (DLC3) of the
vehicle. When the system seems to be
malfunctioning, use the intelligent ...
Other materials:
On-vehicle inspection
1. INSPECT SEAT POSITION SENSOR (VEHICLE NOT
INVOLVED IN COLLISION)
Perform a diagnostic system check.
2. INSPECT SEAT POSITION SENSOR (VEHICLE
INVOLVED IN COLLISION)
Perform a diagnostic system check.
Even if the airbag was not deployed, check if there
is any dama ...
Front Clearance Sonar Sensor LH Circuit
DESCRIPTION
An ultrasonic sensor consists of a sensor portion that transmits and receives
ultrasonic waves and a preamplifier
that amplifies them. The ultrasonic sensor outputs the ultrasonic waves and
sends the received
signals to the clearance warning ECU.
WIRING DIAGRAM
INSPECTION PROC ...
Low Battery Positive Voltage
DTC C1241/41 Low Battery Positive Voltage
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT ECU-IG FUSE
(a) Remove the ECU-IG fuse from the driver side J/B.
(b) Check continuity of the ECU-IG fuse.
Standard resistance
2 CHECK BATTERY
(a) Check the positive battery volt ...
