Diagnostic Procedure
- STEP 1. Check the battery.
Refer to BATTERY TEST .
Q: Is the battery in good condition?
YES : Go to Step 2.
NO : Charge or replace the battery.
- STEP 2. Measure the resistance at C-27 shift lever-ECU connector.
Disconnect the connector, and measure the resistance between terminal No. 8 and ground at the wiring harness side.
OK: Continuity exists (2 Ω or less)
Q: Is the check result normal?
YES : Go to Step 5.
NO : Go to Step 3.
- STEP 3. Shift lever-ECU connector check: C-27
Check for the contact with terminals.
Q: Is the check result normal?
YES : Go to Step 4.
NO : Repair the defective connector.
- STEP 4. Check the wiring harness between C-27 shift lever-ECU connector terminal No. 8 and body ground.
Check the ground line for open circuit.
Q: Is the check result normal?
YES : Go to Step 5.
NO : Repair the wiring harness.
- STEP 5. Measure the voltage at C-27 shift lever-ECU connector.
Disconnect the connector, and measure the voltage between terminal No. 12 and ground at the wiring harness side.
OK: Battery positive voltage
Q: Is the check result normal?
YES : Go to Step 8.
NO : Go to Step 6.
- STEP 6. Shift lever-ECU connector check: C-27
Check for the contact with terminals.
Q: Is the check result normal?
YES : Go to Step 7.
NO : Repair the defective connector.
- STEP 7. Check the wiring harness between C-27 shift lever-ECU connector terminal No. 12 and fusible link No. 36.
Check the power supply line for short or open circuit.
Q: Is the check result normal?
YES : Go to Step 8.
NO : Repair the wiring harness.
- STEP 8. Scan tool diagnostic trouble code
Check the ETACS diagnostic trouble code. (Refer to TROUBLESHOOTING ).
Q: Is the DTC set?
YES : Perform the relevant troubleshooting.
NO : Go to Step 9.
- STEP 9. Measure the voltage at C-27 shift lever-ECU connector.
- Disconnect the connector, and measure the voltage between terminal No. 13 and ground at the wiring harness side.
- Turn the ignition switch to the "ON" position.
OK: Battery positive voltage
Q: Is the check result normal?
YES : Go to Step 12.
NO : Go to Step 10.
- STEP 10. Inspection of the shift lever-ECU connector, intermediate connector, and ETACS-ECU connector: C-27, C-131, C-317
Check for the contact with terminals.
Q: Is the check result normal?
YES : Go to Step 11.
NO : Repair the defective connector.
- STEP 11. Check the wiring harness between C-27 shift lever-ECU connector terminal No. 13 and C-317 ETACS-ECU connector terminal No. 5.
Check the power supply line for short or open circuit.
Q: Is the check result normal?
YES : Go to Step 12.
NO : Repair the wiring harness.
- STEP 12. Retest the system.
Q: Does a malfunction take place again?
YES : Replace the shift lever assembly. (Refer to TRANSMISSION CONTROL ).
NO : Intermittent malfunction. (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).