Toyota Sienna Service Manual: Terminals of ECU

Toyota Sienna Service Manual / Park assist / monitoring / Clearance sonar system / Terminals of ECU

1. CLEARANCE WARNING ECU

CLEARANCE WARNING ECU

*1: with Front Clearance Sonar

2. AIR CONDITIONER AMPLIFIER ASSEMBLY

AIR CONDITIONER AMPLIFIER ASSEMBLY

*1: with Front Clearance Sonar
*2: Manual A/C
*3: Auto A/C

Reference: waveform 1

AIR CONDITIONER AMPLIFIER ASSEMBLY

HINT:

Terminal: CBZ - E, BBZ - E, Z- - Body ground
Gauge set: 2 V/DIV., 500 μs/DIV.
Condition: When the clearance sonar is detecting an object.

Reference: waveform 2

AIR CONDITIONER AMPLIFIER ASSEMBLY

HINT:

Terminal: S5 - E, S6 - E
Gauge set: 2 V/DIV., 100 μs/DIV.
Condition: When the back sonar is not detecting an object

Reference: waveform 3

AIR CONDITIONER AMPLIFIER ASSEMBLY

HINT:

Terminal: S3 - E, S1 - E, S4 - E, S2 - E
Gauge set: 2 V/DIV., 100 μs/DIV.
Condition: When the clearance sonar is not detecting an object.

Problem symptoms table

HINT: Before performing verification listed in the table below, check the fuse and relay. Check the circuits for each problem symptom in the order given in the table below, and p ...

Adjustment

1. ADJUST BUZZER VOLUME Turn the knob on the clearance warning ECU to adjust the volume. ...

Other materials:

Perform zero point calibration of yaw rate and deceleration sensor (when using intelligent tester)
(a) Connect the intelligent tester to the DLC3. (b) Turn the ignition switch to the ON position. (c) Operate the intelligent tester to erase the codes (select "RESET MEMORY"). HINT: Refer to the intelligent tester operator's manual for further details. (d) Using the intell ...

Center Airbag Sensor Assembly Communication Circuit Malfunction
DTC B1790 Center Airbag Sensor Assembly Communication Circuit Malfunction DESCRIPTION The center airbag sensor assembly communication circuit consists of the occupant classification ECU and the center airbag sensor assembly. DTC B1790 is recorded when a malfunction is detected in the center ...

Installation
1. INSTALL HEATED OXYGEN SENSOR (for Bank 2 Sensor 2) (a) Using SST, install the heated oxygen sensor to the front exhaust pipe. SST 09224-00010 Torque: 40 N*m (408 kgf*cm, 30 ft.*lbf) for use with SST 44 N*m (449 kgf*cm, 32 ft.*lbf) for use without SST HINT: Use a torque wrench wit ...