B -- END
A -- REPLACE ELECTRO MAGNETIC CONTROL COUPLING SUB-ASSEMBLY
From 08/2009
MF1A TRANSFER / 4WD / AWD: ACTIVE TORQUE CONTROL 4WD SYSTEM: C1299: Cancellation of 4WD Control
C1299 - Cancellation of 4WD Control
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.
INSPECTION PROCEDURE
HINT
Check the condition of each related circuit connector before troubleshooting See: Accessories and Optional Equipment/Antitheft
and Alarm Systems/Diagrams/Diagnostic Aids/How To Troubleshoot ECU Controlled Systems/Electronic Circuit Inspection
Procedure.
PROCEDURE
1. CHECK TIRE CONDITION
(a) Check the size and condition of all 4 tires See: Maintenance/Wheels and Tires/Testing and Inspection/Component Tests and General
Diagnostics.
HINT
This DTC is output when tire deformation or a difference in tire size is detected.
OK:
The diameter and air pressure of all 4 tires are the same.
NG -- REPLACE TIRE SO THAT ALL 4 TIRES ARE THE SAME IN SIZE
OK -- Continue to next step.
2. CHECK DTC
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Check if the Brake control system DTC is output See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes.
(e) Read the DTCs using the Techstream.
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