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 Click here.
FUNCTION OF INDICATOR LIGHT
When a malfunction occurs in the transfer system, the 4LO indicator light rapidly blinks, the center differential lock indicator light rapidly blinks, and the rear differential lock indicator light* rapidly blinks to inform the user of the malfunction.
Rapidly blinking: Blinks at 0.25 second intervals (0.25 seconds on and 0.25 seconds off)
*: w/ Rear Differential Lock
The illumination state of the indicator lights and sounding state of the buzzers when a DTC is output.
| DTC No. | Switching Mode | 4LO Indicator Light | Center Differential Lock Indicator Light | Rear Differential Lock Indicator Light* | Buzzer |
|---|---|---|---|---|---|
| U0100 | - | Rapidly blinking | State of center differential indicated | State of rear differential indicated | - |
| U0122 | Switching between transfer high and low | Rapidly blinking or state of transfer indicated | State of center differential indicated | State of rear differential indicated | - |
| Center differential switching between free and lock | State of transfer indicated | Blinks 3 times | State of rear differential indicated | Sounds 3 times | |
| Rear differential switching between free and lock* | State of transfer indicated | State of center differential indicated | Rapidly blinking | - | |
| U0416 | Switching between transfer high and low | Rapidly blinking or state of transfer indicated | State of center differential indicated | State of rear differential indicated | - |
| Center differential switching between free and lock | State of transfer indicated | Blinks 3 times | State of rear differential indicated | Sounds 3 times | |
| Rear differential switching between free and lock* | State of transfer indicated | State of center differential indicated | Rapidly blinking | - | |
| P163B | - | Rapidly blinking | Rapidly blinking | State of rear differential indicated | - |
| P17A8 | Switching between transfer high and low | Rapidly blinking | Rapidly blinking | State of rear differential indicated | - |
| P17A9 | - | Rapidly blinking | Rapidly blinking | State of rear differential indicated | - |
| P17AA | - | Rapidly blinking | Rapidly blinking | State of rear differential indicated | - |
| P17AC | ECU activated | Rapidly blinking | Rapidly blinking | State of rear differential indicated | - |
| Switching between transfer high and low | Rapidly blinking | State of center differential indicated | State of rear differential indicated | - | |
| P17C2* | Rear differential switching between free and lock | State of transfer indicated | State of center differential indicated | Rapidly blinking | - |
| P17C3* | Rear differential switching between free and lock | State of transfer indicated | State of center differential indicated | Rapidly blinking | - |
| P17D0 | - | State of transfer indicated | Rapidly blinking | State of rear differential indicated | - |
| P17DE | Center differential switching between free and lock | Rapidly blinking | Rapidly blinking | State of rear differential indicated | - |
| P17DF | ECU activated | Rapidly blinking | Rapidly blinking | State of rear differential indicated | - |
| Center differential switching between free and lock | State of transfer indicated | Rapidly blinking | State of rear differential indicated | - |
Blinking: Blinks at 0.5 second intervals (0.5 seconds on and 0.5 seconds off)
Rapidly blinking: Blinks at 0.25 second intervals (0.25 seconds on and 0.25 seconds off)
*: w/ Rear Differential Lock