ABS W/EBD & BA & TRAC & VSC System

DTC C0200 RIGHT FRONT WHEEL SPEED SENSOR SIGNAL MALFUNCTION

CIRCUIT DESCRIPTION

DTC Detecting Conditions:

The speed sensor detects the wheel speeds and sends the appropriate signals to the skid control ECU.

Speed sensor rotors have rows of alternating N and S magnetic poles, and their magnetic fields change when the rotors turn. Each speed sensor detects that magnetic change and sends a pulse signal to the skid control ECU. The ECU monitors the wheel speeds according to the speed signals to control the ABS, BA, TRAC, A-TRAC, VSC, AUTO LSD, DAC and HAC systems.

HINT:
DTC C0200/31 relates to the right front speed sensor.
DTC C0205/32 relates to the left front speed sensor.
DTC C0210/33 relates to the right rear speed sensor.
DTC C0215/34 relates to the left rear speed sensor.

Wiring Diagram:

Step 1:

Step 2:

Step 3 - 5:

Step 6 - 7:

Step 8 - 9:

INSPECTION PROCEDURE

HINT: Start the inspection from step 1 when using a hand-held tester and start from step 3 when not using a handheld tester.

CHECK FOR INTERMITTENT PROBLEMS

HINT: A momentary interruption (open circuit) in the connectors and/ or wire harness between the sensors and ECUs can be detected through the ECU data monitor function of the hand-held tester.




a. Turn the ignition switch off and connect the hand-held tester to the DLC3.




b. Turn the ignition switch on. Follow the on-screen directions on the hand-held tester to display the DATA LIST and select areas which should be monitored for momentary interruptions.

HINT: A momentary interruption (open circuit) cannot be detected for 3 seconds after the ignition switch is turned on (initial check).






HINT:
- If the hand-held tester status remains open, check the continuity between the ECU and the sensors, or between ECUs.
- The OPEN display on the hand-held tester remains on for 1 second after the harness signal changes from momentary interruption (open circuit) to normal condition.




c. While observing the screen, gently jiggle the connector or wire harness between the ECU and sensors, or between ECUs.

OK: OPEN-screen display does not change.