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 and perform troubleshooting.
2. CHECK DLC3
(a) Inspect the battery voltage.
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge the battery before proceeding.
(b) Check the DLC3 (See page ).
3. FUNCTION OF INDICATOR LIGHT
(a) When a problem occurs in the differential system (w/ Differential Lock), the rear differential lock indicator light on the combination meter assembly rapidly blinks* to inform the driver of the problem.
(b) Indicator light (illuminated or blinking) or multi-information display status when DTC is output.
(1) for 4WD
DIFFERENTIAL SYSTEM (w/ Differential Lock)
DTC No. |
Rear Differential Lock Indicator Light |
4WD Indicator Light (Green) |
4LO Indicator Light |
Multi-information Display Message |
---|---|---|---|---|
U0122 |
Rear differential locked: Illuminated Rear differential free: Not illuminated |
Not illuminated |
Rapidly blinking |
2WD-4WD mode change malfunction visit your dealer |
U0416 |
||||
P163B |
Not illuminated |
Status displayed* |
||
P17BB |
Rapidly blinking |
Not illuminated |
Not illuminated |
- |
P17BC |
||||
P17C0 |
Rapidly blinking |
Status displayed* |
Status displayed* |
- |
P17C1 |
||||
P17CC |
Rapidly blinking |
Not illuminated |
Not illuminated |
- |
(2) for 2WD:
DIFFERENTIAL SYSTEM (w/ Differential Lock)
DTC No. |
Rear Differential Lock Indicator Light |
---|---|
U0122 |
Rapidly blinking |
U0416 |
|
P163B |
|
P17BB |
|
P17BC |
|
P17C0 |
|
P17C1 |
|
P17CC |
4. CHECK INDICATOR LIGHT
(a) for 4WD:
With the ignition switch turned to ON and the transfer in 2WD, press the differential lock switch and check that the rear differential lock indicator light blinks* 3 times.
*: 0.5 second intervals (0.5 seconds on and 0.5 seconds off)
for 2WD:
With the ignition switch turned to ON, press the differential lock switch and check that the rear differential lock indicator light blinks* 3 times.
*: 0.5 second intervals (0.5 seconds on and 0.5 seconds off)
Power Source Mode does not Change to ON (ACC)
DESCRIPTION
If the engine switch is pressed with the electrical key transmitter sub-assembly
in the cabin, the certification ECU (smart key ECU assembly) receives a signal and
changes the power source mode.
HINT:
When the cable is disconnected and reconnected to the negative (-) battery termi ...
Short to GND in Immobiliser System Power Source Circuit (B278A)
DESCRIPTION
When there is a short to GND in the power supply for the transponder key amplifier
of the engine switch, the certification ECU (smart key ECU assembly) stores this
DTC.
DTC Code
DTC Detection Condition
Trouble Area
DTC Output Confirmation ...
Mechanical System Tests
MECHANICAL SYSTEM TESTS
1. STALL SPEED TEST
HINT:
This test is to check the overall performance of the engine and transmission.
CAUTION:
This test should be done on a paved surface (a surface that is not slippery).
To ensure safety, perform this test in an open and level area tha ...