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)
Lost Communication with Vehicle Dynamics Control Module Missing Message (U012287)
DESCRIPTION
The ECM receives signals from the skid control ECU (brake actuator assembly)
via CAN communication.
DTC No.
DTC Detection Condition
Trouble Area
MIL
Note
U012287
While cruise control main switch ON, co ...
IG Signal Circuit
DESCRIPTION
This circuit detects whether the ignition switch is ON or off, and sends this
information to the main body ECU (multiplex network body ECU).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing
the fol ...
Vehicle Information Not Obtained (C1A02)
DESCRIPTION
When a new millimeter wave radar sensor assembly is installed, it receives vehicle
specification information (destination, steering wheel position, 2WD or 4WD, etc.)
from the main body ECU (multiplex network body ECU) and stores the information.
DTC C1A02 is stored when the millime ...