Wireless Door Lock Tuner Circuit Malfunction (B1242)
PrecautionDiagnosis System
DIAGNOSIS SYSTEM
1. DESCRIPTION
The 4 wheel drive control ECU records DTCs when the ECU detects a malfunction
in the ECU itself or in system circuits.
The DTCs can be read through the DLC3 of the vehicle. When the system seems to
be malfunctioning, use the Techstream to check for malfunctions ...
Route cannot be Calculated
PROCEDURE
1.
SET DESTINATION
(a) Set another destination and check if the system can calculate the route correctly.
OK:
Route can be correctly calculated.
OK
NORMAL OPERATION
NG
PROCEED TO NEXT SUSPECTED AREA SHOWN ...
Terminals Of Ecu
TERMINALS OF ECU
1. CHECK TIRE PRESSURE WARNING ECU AND RECEIVER
(a) Disconnect the T14 tire pressure warning ECU and receiver connector and measure
the voltage and resistance on the wire harness side.
Text in Illustration
*A
w/o Wireless Door Lock System
...