Metal Stick to Speed Sensor (FL)

DTC 36 METAL STICK TO SPEED SENSOR (FL)

CIRCUIT DESCRIPTION

DTC Detecting Conditions:

The Skid Control ECU sets this DTC if, according to abnormal signals input by the sensor, it detects that foreign material is adhering to the speed sensor tip or the sensor rotor, or the rotor has any missing teeth. This DTC may be set if parts such as the speed sensor circuit connector or wire harness are malfunctioning.

HINT:
DTC C1235/35 relates to the right front speed sensor.
DTC C1236/36 relates to the left front speed sensor.
DTC C1238/38 relates to the right rear speed sensor.
DTC C1239/39 relates to the left rear speed sensor.

Wiring Diagram:

Step 1:

Step 2 - 3:

Step 4:

INSPECTION PROCEDURE

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.