Toyota Sienna Service Manual: How to proceed with troubleshooting
The intelligent tester can be used at step 2, 5, 8, 11.
1 Vehicle Brought to Workshop
2 Check and Clear DTCs and Freeze Frame Data
HINT: See page BC-82 and BC-84.
3 Problem Symptom Confirmation
4 Symptom Simulation
5 DTC Check
HINT: See page BC-82.
6 Problem Symptoms Table
HINT: See page BC-79.
7 DTC Chart
HINT: See page BC-88.
8 Circuit Inspection
9 Identification of Problem
10 Repair
11 Confirmation Test
End
System description
1. SYSTEM DESCRIPTION
(a) ABS
(Anti-lock Brake System)
The ABS helps prevent wheels from locking when
the brake is applied firmly or when braking on a
slippery surface.
(b) EBD
(Electronic Brak ...
Calibration
...
Other materials:
The Other Caller cannot Hear Your Voice, or Your Voice is too Quiet or
Distorted
INSPECTION PROCEDURE
1 CHECK CELLULAR PHONE
Check if the other side can hear your voice properly.
OK:
Your voice can be heard correctly.
2 CHECK SETTINGS
Check if the mute switch is set to ON.
OK:
Mute switch is not set to ON.
3 CHECK SETTINGS
Enter the "Handsfree ...
A/C ECU Communication Stop
DTC B1262 A/C ECU Communication Stop
DESCRIPTION
DTC B1262 is output when communication between the A/C amplifier and the
multiplex network gateway
ECU stops for more than 10 seconds.
DTC No.
DTC Detection Condition
Trouble Area
B1262
A/C ECU communicat ...
Terminals of ECU
1. MULTIPLEX NETWORK GATEWAY ECU
Disconnect the G4 ECU connector.
Measure the voltage between the specified
terminals on the wire harness side connector.
If the result is not as specified, there may be a
malfunction on the wire harness side.
Measure the resistance between ...
