DTC C1210: Rear Right Wheel Speed Sensor (Open Circuit Or Short Circuit): Diagnosis

Required Special Tools:

MB991958: Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: V.C.I.
- MB991827: M.U.T.-III USB Cable
- MB991910: M.U.T.-III Main Harness A
MB991997: ASC Check Harness

STEP 1. Using scan tool MB991958, diagnose the CAN bus line.
CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.
1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Diagnose the CAN bus line.
4. Turn the ignition switch to the "LOCK" (OFF) position.
  Q: Is the CAN bus line found to be normal?
  
  YES : Go to Step 3
  
  NO : Repair the CAN bus line (Refer to DIAGNOSIS ). Then go to Step 2.
  
  Fig 1: Identifying Special Tool MB991910 With Data Link Connector
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
STEP 2. Recheck for diagnostic trouble code.
CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.
1. Turn the ignition switch to the "ON" position.
2. Erase the DTC.
3. Turn the ignition switch to the "LOCK" (OFF) position.
4. Turn the ignition switch to the "ON" position.
5. Check if the DTC is set.
6. Turn the ignition switch to the "LOCK" (OFF) position.
  Q: Is DTC C1210 set?
  
  YES : Go to Step 3
  
  NO : The procedure is complete.
  
  Fig 2: Identifying Special Tool MB991910 With Data Link Connector
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
STEP 3. Using scan tool MB991958, check data list.
CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.
1. Connect scan tool MB991958 to the data link connector.
2. Start the engine.
3. Set scan tool MB991958 to the data reading mode, and check the data list items by driving the vehicle (Refer to DATA LIST REFERENCE TABLE ).
  - Item 03: Rear right wheel speed sensor
4. Turn the ignition switch to the "LOCK" (OFF) position.
  Q: Does the speedometer indication match the scan tool indication?
  
  YES : Go to Step 10.
  
  NO : Go to Step 4.
  
  Fig 3: Identifying Special Tool MB991910 With Data Link Connector
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
STEP 4. Measure the voltage at ABS/TCL-ECU connector A-03.
1. Disconnect the connector A-03, and connect special tool MB991997 to the wiring harness-side connector.
  NOTE: Do not connect special tool MB991997 to the ABS/TCL-ECU.
2. Turn the ignition switch to the "ON" position.
3. Measure the voltage between terminal 42 and body ground, and between terminal 43 and body ground. It should be 1V or less.
  Q: Does the voltage measure 1 V or less?
  
  YES : Go to Step 5.
  
  NO : Go to Step 7.
  
  Fig 4: Measuring Voltage Between Terminal 42 And Body Ground
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
STEP 5. Measure the resistance at ABS/TCL-ECU connector A-03.
1. Disconnect the connector A-03, and connect special tool MB991997 to the wiring harness-side connector.
  NOTE: Do not connect special tool MB991997 to the ABS/TCL-ECU.
2. Measure the resistance between terminal 42 and body ground, and between terminal 43 and body ground. There should be no continuity.
  Q: Does continuity exist?
  
  YES : Go to Step 7.
  
  NO : Go to Step 6.
  
  Fig 5: Measuring Voltage Between Terminal 42 And Body Ground
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
STEP 6. Measure the resistance at the ABS/TCL-ECU connector A-03.
1. Disconnect the connector A-03, and connect special tool MB991997 to the wiring harness-side connector.
  NOTE: Do not connect special tool MB991997 to the ABS/TCL-ECU.
2. Measure the resistance between the ABS/TCL-ECU connector terminals 42 and 43.
  Standard Value: 1.24 - 1.64 kΩ
  
  Q: Is the resistance between terminals 42 and 43 within the standard value?
  
  YES : Go to Step 10.
  
  NO : Go to Step 7.
  
  Fig 6: Measuring Resistance Between ABS/TCL-ECU Connector Terminals 42 And 43
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
STEP 7. Check ABS/TCL-ECU connector A-03, intermediate connector C-26 and wheel speed sensor < rear: RH > connector F-08 for loose, corroded or damaged terminals, or terminals pushed back in the connector.

Fig 7: Locating ABS/TCL-ECU Connector A-03
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Fig 8: Locating Intermediate Connector C-26
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Fig 9: Identifying Wheel Speed Sensor Rear RH Connector F-08
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Q: Are ABS/TCL-ECU connector A-03, intermediate connector C-26 and wheel speed sensor < rear: RH > connector F-08 damaged?

YES : Repair or replace the damaged component(s). Refer to HARNESS CONNECTOR INSPECTION . Then go to Step 11.

NO : Go to Step 8.

Fig 10: Locating Wheel Speed Sensor Rear RH Connector F-08
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
STEP 8. Check the harness wires between ABS/TCL-ECU connector A-03 (terminal 42, 43) and wheel speed sensor < rear: RH > connector F-08 (terminal 2, 1).
Q: Is the harness wire between ABS/TCL-ECU connector A-03 (terminal 42, 43) and wheel speed sensor < rear: RH > connector F-08 (terminal 2, 1) damaged?

YES : Repair the wiring harness. Then go to Step 11.

NO : Go to Step 9.

Fig 11: Locating ABS/TCL-ECU Connector A-03
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Fig 12: Identifying Wheel Speed Sensor Rear RH Connector F-08
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Fig 13: Locating Wheel Speed Sensor Rear RH Connector F-08
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
STEP 9. Inspect the wheel speed sensor.
Check the wheel speed sensor relevant to the DTC code. For the applicable inspection procedure, refer to INSPECTION .
- When DTC code C1210 is set: Rear right wheel speed sensor
  Q: Is the wheel speed sensor damaged?
  
  YES : Replace the wheel speed sensor. Then go to Step 11.
  
  NO : It can be assumed that this malfunction is intermittent. Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTIONS .
STEP 10. Recheck for diagnostic trouble code.
CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.

Check again if the DTC is set.
1. Turn the ignition switch to the "ON" position.
2. Erase the DTC.
3. Turn the ignition switch to the "LOCK" (OFF) position.
4. Turn the ignition switch to the "ON" position.
5. Check if the DTC is reset.
6. Turn the ignition switch to the "LOCK" (OFF) position.
  Q: Is DTC C1210 set?
  
  YES : Replace the hydraulic unit (integrated with ABS/TCL-ECU). Then go to Step 11.
  
  NO : It can be assumed that this malfunction is intermittent. Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTIONS .
  
  Fig 14: Identifying Special Tool MB991910 With Data Link Connector
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
STEP 11. Recheck for diagnostic trouble code.
CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.
1. Turn the ignition switch to the "ON" position.
2. Erase the DTC.
3. Turn the ignition switch to the "LOCK" (OFF) position.
4. Turn the ignition switch to the "ON" position.
5. Check if the DTC is set.
6. Turn the ignition switch to the "LOCK" (OFF) position.
  Q: Is DTC C1210 set?
  
  YES : Repeat the troubleshooting from Step 1.
  
  NO : The procedure is complete.
  
  Fig 15: Identifying Special Tool MB991910 With Data Link Connector
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.