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Diagnostic Test

  1. CHECK FOR PRESENCE OF SHORT CIRCUIT TO BATTERY ON THE CAN H (HS-CAN) LINE 
    1. Measure the voltage between pin F of the diagnostic connector (CAN H line) and body.

      Is the measured voltage 12.0 V?

      Yes 

      • A short circuit to battery has occurred on the CAN H line.
      • Go to Step  3.

      No 

      • Go to Step  2.
  2. CHECK FOR PRESENCE OF SHORT CIRCUIT TO GROUND ON THE CAN H (HS-CAN) LINE 
    1. Measure the voltage between pin E of the diagnostic connector (CAN L line) and ground.

      Is voltage higher than 0 V?

      Yes 

      • A short circuit to ground has occurred on the CAN L line.
      • Go to Step  7.

      No 

      • Go to Step  5.
  3. CHECK FOR PRESENCE OF SHORT CIRCUIT TO BATTERY ON THE HS-CAN LINE 
    1. PIN F of the diagnostic connector (CAN H line) and body ground.
    2. PIN E of the diagnostic connector (CAN L line) and body ground.

      Is a voltage of 12.0 V measured between any one of these pins?

      Yes 

      • Short circuit to battery has occurred on the HS-CAN line.
      • Go to Step  4.

      No 

      • Go to Step  5.
  4. CHECK FOR PRESENCE OF SHORT CIRCUIT TO BATTERY OF THE ABS MODULE 
    1. Go to Key-OFF status.
    2. Disconnect the negative battery cable.
    3. Disconnect the ABS Module connector.
    4. Connect the negative battery cable.
    5. Go to Key-ON status (engine off).
    6. Measure voltage on pins F and E of the diagnostic connector.

      Is the measured voltage 1.5V - 3.5 V?

      Yes 

      • Replace the ABS Module because subject to short circuit to battery.
      • If the DTC persists, go to Step  9.

      No 

      • Repair or replace the wiring between ABS Module and the rest of the system because the wiring is subject to short circuit to battery.
  5. CHECK FOR AN OPEN CIRCUIT ON THE HS-CAN LINE 
    1. PIN F of the diagnostic connector (CAN H line) and body ground.
    2. PIN E of the diagnostic connector (CAN L line) and body ground.

      Is the voltage between both terminals the same?

      Yes 

      • Short circuit has occurred between the terminals of the HS-CAN line.
      • Go to Step  6.

      No 

      • Check the electrical connections again.
      • Replace the ABS Module if the DTC occurs again.
  6. CHECK FOR PRESENCE OF FAULT ON THE HS-CAN LINE CIRCUIT 
    1. PIN F of the diagnostic connector (CAN H line) and body ground.
    2. PIN E of the diagnostic connector (CAN L line) and body ground.

      Is the voltage between both PINS 0 V?

      Yes 

      • Short circuit to ground has occurred on the CAN H (HS-CAN) line.
      • Go to Step  7.

      No 

      • A short circuit between the CAN H and the CAN L (HS-CAN) has occurred.
      • Go to Step  8.
  7. CHECK FOR PRESENCE OF SHORT CIRCUIT TO GROUND ON THE ABS MODULE CAN LINE 
    1. Disconnect the ABS Module connector.
    2. PIN C of ABS Module (wiring side) and body ground.
    3. PIN D of ABS Module (wiring side) and body ground.

      Is short-circuit present?

      Yes 

      • Repair or replace the wiring between ABS Module and the rest of the system because the wiring is subject to short circuit to ground.

      No 

      • Replace the ABS Module because subject to short circuit to ground.
      • If the DTC persists, go to Step  9.
  8. CHECK FOR PRESENCE OF SHORT CIRCUIT BETWEEN THE ABS MODULE TERMINALS 
    1. Disconnect the ABS Module connector.
    2. Disconnect the negative battery cable.
    3. Disconnect the ABS Module connector.
    4. Check continuity between pin C and pin D (wiring side) of the ABS Module.

      Is short-circuit present?

      Yes 

      • Repair or replace the wiring between ABS Module and the rest of the system because the wiring is subject to short circuit to between the terminals.

      No 

      • Replace the ABS Module because subject to short circuit to between the terminals.
      • If the DTC persists, go to Step  9.
  9. CHECK THE CORRECT OPERATION OF THE PASSIVE ENTRY NODE 
    1. With the scan tool, erase DTCs.
    2. Check whether the DTC is still present.

      Is the DTC still present?

      Yes 

      • Repeat the checks from Step  1 .
      • Replace the Passive Entry Node if the DTC occurs again.

      No 

      • End of diagnosis.
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