Toyota Sienna Service Manual: Terminals of ECU
1. CHECK POWER SLIDE DOOR ECU LH
- Disconnect the P25 and P26 ECU connectors, and check the voltage and resistance of each terminal 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 ECU connectors, and check the voltage of each terminal of the connectors.
*1 Satellite switch (Slide door LH)
*2 Power slide door control switch LH
*3 Transmitter switch (Slide door LH)
*4 When all the conditions listed below are met, the
warning buzzer sounds.
- Ignition switch is turned ON
- Shift lever is moved into any position except P position
- Slide door is open or power slide door system is activated to open
*5 When any condition listed below is met, the sounding warning buzzer stops.
- Shift lever is moved into P position
- Slide door is fully closed
*6 Terminal SEL is used for distinction between the power slide door ECU LH and RH. Only terminal SEL of the power slide door ECU LH is grounded.
HINT: Use an oscilloscope to check the output voltages of the power slide door main switch, buzzer and pulse sensor.
If the result is not as specified, the ECU may have a malfunction.
2. CHECK POWER SLIDE DOOR ECU RH
- Disconnect the P27 and P28 ECU connectors, and check the voltage or resistance of each terminal 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 ECU connectors, and check the voltage of each terminal of the connectors.
*1 Satellite switch (Slide door RH)
*2 Power slide door control switch RH
*3 Transmitter switch (Slide door RH)
*4 When all the conditions listed below are met, the
warning buzzer sounds.
- Ignition switch is turned ON
- Shift lever is moved into any position except P position
- Slide door is open or power slide door system is activated to open
*5 When any condition listed below is met, the sounding warning buzzer stops.
- Shift lever is moved into P position
- Slide door is fully closed
HINT: Use an oscilloscope to check the output voltages of the power slide door main switch, buzzer and pulse sensor.
If the result is not as specified, the ECU may have a malfunction.
Problem symptoms table
POWER SLIDE DOOR SYSTEM
Symptom
Suspected Area
Power slide door LH does not operate when switch* is
pressed (* switch indicates satellite switch for power
slide door ...
Diagnosis system
1. CHECK DLC3
The vehicle's ECU uses ISO 15765-4 for
communication protocol. The terminal arrangement
of the DLC3 complies with SAE J1962 and matches
the ISO 15765-4 format
NOTICE:
...
Other materials:
ABS Control System Malfunction
DTC 43 ABS Control System Malfunction
DESCRIPTION
This DTC is output when the VSC system detects a malfunction in the ABS
control system.
INSPECTION PROCEDURE
NOTICE:
When replacing the brake actuator assembly, perform zero point calibration
(See page BC-70).
1 CHECK ABS CONTROL SYSTEM
( ...
Inspection
1. INSPECT STEERING PAD SWITCH LH (w/o
Navigation System)
Measure the resistance according to the values in
the table below.
Standard resistan
If the result is not as specified, replace the steering
pad switch LH.
2. INSPECT STEERING PAD SWITCH RH (w/ Navigation
System)
...
Front passenger side power
window switch
Inspection
1. INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY
Check the resistance between the switch terminals
when the switch is operated.
Standard
If the result is not as specified, replace the switch
assembly. ...
