Diagnostic Test

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 a voltage of 12 V measured?
  
  Yes
  - Short circuit to battery has occurred on the CAN H line.
  - Go to 3.
  No
  - Go to 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
  - Short circuit to ground has occurred on the CAN L line.
  - Go to 7.
  No
  - Go to 5.
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
2. pin E of the diagnostic connector (CAN L line) and body
  Is a voltage of 12 V measured between any one of these pins?
  
  Yes
  - Short circuit to battery has occurred on the HS-CAN line.
  - Go to 4.
  No
  - Go to 5.
CHECK FOR PRESENCE OF SHORT CIRCUIT TO BATTERY OF THE POWERTRAIN CONTROL MODULE (PCM)
1. Go to key-off condition.
2. Disconnect the negative battery lead.
3. Disconnect the PCM connector.
4. Connect the negative battery lead.
5. Go to key-on condition (engine off).
6. Measure voltage on pins F and E of the diagnostic connector.
  Is the measured voltage 1.5 - 3.5 V?
  
  Yes
  - Replace the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL (PCM), REMOVAL AND INSTALLATION .
  - If the error occurs again, Go to 9.
  No
  - Repair or replace the wiring between PCM and the rest of the system because the wiring is subject to short circuit to battery.
CHECK FOR PRESENCE OF OPEN CIRCUIT ON THE HS-CAN LINE
1. pin F of the diagnostic connector (CAN H line) and body
2. pin E of the diagnostic connector (CAN L line) and body
  Is the voltage between the terminals the same?
  
  Yes
  - Short circuit has occurred between the terminals of the HS-CAN line.
  - Go to 6.
  No
  - Check the electric connections again.
  - Replace the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL (PCM), REMOVAL AND INSTALLATION .
CHECK FOR PRESENCE OF FAULT ON THE HS-CAN LINE CIRCUIT
1. pin F of the diagnostic connector (CAN H line) and body
2. pin E of the diagnostic connector (CAN L line) and body
  Does the voltage between the pins correspond to 0V?
  
  Yes
  - Short circuit to ground has occurred on the CAN H (HS-CAN) line.
  - Go to 7.
  No
  - A short circuit between the CAN H and the CAN L (HS-CAN) has occurred.
  - Go to 8.
CHECK FOR PRESENCE OF SHORT CIRCUIT TO GROUND ON THE ENGINE CONTROL NODE CAN LINE
1. Disconnect the PCM connector.
2. pin AK (connector B) of PCM (wiring side) and body
3. pin AL (connector B) of PCM (wiring side) and body
  Is short-circuit present?
  
  Yes
  - Repair or replace the wiring between PCM and the rest of the system because the wiring is subject to short circuit to ground.
  No
  - Replace the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL (PCM), REMOVAL AND INSTALLATION .
  - If the error occurs again, Go to 9.
CHECK FOR THE PRESENCE OF SHORT CIRCUIT BETWEEN THE ENGINE CONTROL NODE TERMINALS
1. Disconnect the PCM connector.
2. Check continuity between PIN AK and PIN AL (connector B) (wiring side) of the Engine Control Node.
  Is short-circuit present?
  
  Yes
  - Repair or replace the wiring between PCM and the rest of the system because the wiring is subject to short circuit to between the terminals.
  No
  - Replace the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL (PCM), REMOVAL AND INSTALLATION .
  - If the error occurs again, Go to 9.
CHECK THAT THE POWER STEERING NODE IS WORKING PROPERLY
1. Carry out the Electric Power Steering (EPS) Module error deletion procedure.
2. Check whether the error is still present.
  Is the error still present?
  
  Yes
  - Repeat the checks from Step 1.
  - Replace the Electric Power Steering (EPS) Module in accordance with the Service Information. Refer to GEAR, REMOVAL AND INSTALLATION .
  No
  - End of diagnosis.