DTC B1272 Power Seat ECU Communication Stop
DESCRIPTION
This DTC is detected when communication between the seat position control ECU and the multiplex network gateway ECU stops for more than 10 seconds.
DTC No. |
DTC Detection Condition |
Trouble Area |
B1272 |
Power seat ECU communication stops |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK HARNESS AND CONNECTOR (SEAT POSITION CONTROL ECU - BATTERY)
Standard voltage
2 CHECK HARNESS AND CONNECTOR (SEAT POSITION CONTROL ECU - GROUND)
Standard resistance
3 CHECK COMMUNICATION LINE
Standard resistance
Result
REPLACE SEAT POSITION CONTROL ECU
Mechanical system tests
1. PERFORM MECHANICAL SYSTEM TESTS
(a) Measure the stall speed.
The object of this test is to check the overall
performance of the transaxle and engine by
measuring the stall speeds in the D position.
NOTICE:
Driving test should be done on a paved road
(a nonskid road).
Per ...
U151f automatic transaxle
SST
RECOMMENDED TOOLS
EQUIPMENT
LUBRICANT
SSM
...
Removal
HINT:
Use the same procedures for the RH side and LH side.
The procedures listed below are for the LH side.
1. PRECAUTION
CAUTION: Be sure to read "PRECAUTION" thoroughly before
servicing.
2. DISCONNECT CABLE FROM NEGATIVE BATTERY
TERMINAL
CAUTION:
Wait for 90 s ...