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 GTS to check for malfunctions and perform troubleshooting.
CHECK DLC3
Inspect the battery voltage.
If the voltage is below 11 V, recharge the battery before proceeding.
Check the DLC3.
FUNCTION OF INDICATOR LIGHT
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.
*: 0.25 second intervals (0.25 seconds on and 0.25 seconds off)
Indicator light (illuminated or blinking) or multi-information display status when DTC is output
except Pre-Runner:
| 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 | ||||
| P17BB | Rapidly blinking | Status displayed* | Status displayed* | - |
| P17BC | ||||
| P17C0 | ||||
| P17C1 | ||||
| P17CC |
*: Displays the 2WD/4WD mode status during a malfunction
Rapidly blinking: Blinks at 0.25 second intervals (0.25 seconds on and 0.25 seconds off)
for Pre-Runner:
| DTC No. | Rear Differential Lock Indicator Light |
|---|---|
| U0122 | Rapidly blinking |
| U0416 | |
| P163B | |
| P17BB | |
| P17BC | |
| P17C0 | |
| P17C1 | |
| P17CC |
Rapidly blinking: Blinks at 0.25 second intervals (0.25 seconds on and 0.25 seconds off)
CHECK INDICATOR LIGHT
except Pre-Runner:
With the ignition switch turned to ON and the transfer in H2, 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 Pre-Runner:
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)