Toyota Sienna Service Manual: 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 communication stops |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK HARNESS AND CONNECTOR (A/C AMPLIFIER - BATTERY)
- Disconnect the A9 connector.
- Measure the voltage according to the value(s) in the table below.
Standard voltage
HINT:
*1: for Automatic A/C
*2: for Manual A/C
2 CHECK HARNESS AND CONNECTOR (A/C AMPLIFIER - GROUND)
- Measure the resistance according to the value(s) in the table below.
Standard resistance
HINT:
*1: for Automatic A/C
*2: for Manual A/C
3 CHECK COMMUNICATION LINE
- Disconnect the C10 and A21 connectors.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
HINT:
*1: for Automatic A/C
*2: for Manual A/C
Result
REPLACE A/C AMPLIFIER
Rear Door ECU LH Communication Stop
DTC B1217 Rear Door ECU LH Communication Stop
DESCRIPTION
DTC B1217 is output when communication between the power slide door ECU LH
and the multiplex
network gateway ECU stops for more than 10 s ...
Combination Meter ECU Communication Stop
DTC B1271 Combination Meter ECU Communication Stop
DESCRIPTION
DTC B1271 is output when communication between the combination meter and the
multiplex network
gateway ECU stops for more than 10 se ...
Other materials:
Rear wheel alignment
ADJUSTMENT
NOTICE:
For vehicles equipped with VSC, if wheel alignment has
been adjusted, and if suspension or underbody
components have been removed/installed or replaced, be
sure to perform the following initialization procedure in
order for the system to function normally:
1. Disconnect the ...
Low pitched horn
COMPONENTS
REMOVAL
1. REMOVE FRONT BUMPER COVER
ET-3
2. REMOVE LOW PITCHED HORN
Disconnect the connector.
Remove the bolt and horn.
INSPECTION
1. INSPECT LOW PITCHED HORN
Apply battery voltage and check operation of the
horn, as shown in the table.
Stan ...
Windshield wipers and
washer
Operating the wiper lever
The wiper operation is selected by moving the lever as follows.
The illustration is intended as an example.
Intermittent windshield wipers with interval adjuster
*1 or
*2
Intermittent windshield
wiper operation
*1 or
*2
Low speed windshield
w ...
