Circuit Description
If wheel slip continues, differential control will be disabled when the torque-distribution ratio of the differential clutch exceeds the set value and a malfunction in the output of the wheel speed sensors, etc. occurs.
If a difference in diameter between the front and rear wheels is determined, differential control will be disabled.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC C1299 Cancellation of 4WD Control
Conditions for Running the DTC
This DTC shall run when the ignition is On.
Conditions for Setting the DTC
When one of the following conditions is met:
| • | Control coupling lock is detected 4 more times. |
| • | Condition that controls coupling calorific value is predefined value or more. |
| • | Condition that transfer oil temperature is predefined value or more. |
| • | Vehicle is driven and energy load tire radius difference between front tires and rear tires is more than 3 percent. |
Action Taken When the DTC Sets
The 4WD control module will prohibit operations by the fail safe function.
Conditions for Clearing the DTC
The DTC will clear when conditions for setting the DTC have been repaired.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: Transfer Case Control Schematics Connector End View Reference: Component Connector End Views | ||||
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | |
2 | Check the size and tire condition of all 4 tires. Is the size and air pressure of all 4 tires the same? | -- | Go to Step 3 | Go to Tire Placard |
3 |
Does DTC reset? | -- | Go to Step 4 | Go to Step 5 |
4 | Replace 4WD linear solenoid. Did you complete the replacement? | -- | Go to Step 6 | -- |
5 | Replace 4WD control module. Did you complete the replacement? | -- | Go to Step 6 | -- |
6 |
Does the DTC reset? | -- | Go to Step 2 | System OK |
