DESCRIPTION
This DTC is stored when the engine switch power source supply line is open or shorted.
DTC Code |
DTC Detection Condition |
Trouble Area |
---|---|---|
B278A |
The engine switch power source supply line is open or shorted. |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Before replacing the certification ECU, refer to Registration (See page
).
PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - ENGINE SWITCH) |
(a) Disconnect the F79 ECU connector.
(b) Disconnect the F71 switch connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F79-28 (VC5) - F71-14 (VC5) |
Always |
Below 1 Ω |
F79-36 (AGND) - F71-8 (AGND) |
||
F79-28 (VC5) or F71-14 (VC5) - Body ground |
Always |
10 kΩ or higher |
F79-36 (AGND) or F71-8 (AGND) - Body ground |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
2. |
CHECK CERTIFICATION ECU |
(a) Using an oscilloscope, check the waveform. Measurement Condition
OK: Waveform is output normally (refer to illustration). Text in Illustration
|
|
OK | ![]() |
REPLACE ENGINE SWITCH |
NG | ![]() |
REPLACE CERTIFICATION ECU |
Steering Angle Sensor Circuit Malfunction (C1884/84)
DESCRIPTION
The stabilizer control ECU receives steering angle information from the steering
angle sensor via CAN communication.
DTC Code
DTC Detection Condition
Trouble Area
C1884/84
Either cond ...
Front Differential Carrier Oil Seal(for 4wd)
Components
COMPONENTS
ILLUSTRATION
Replacement
REPLACEMENT
PROCEDURE
1. REMOVE FRONT DIFFERENTIAL CARRIER ASSEMBLY
(a) Remove the front differential carrier assembly (See page
).
2. REMOVE FRONT DRIVE PINION COMPANION FLANGE NUT
(a) Using SS ...