STEP 1. Check the CAN-C-Mid. Resistance measurement at ETACS-ECU connector.
caution | A digital multimeter should be used. For details refer to . |
caution | The test wiring harness should be used. For details refer to . |
note | This inspection allows you to check that there is a short to ground in either CAN_H line or CAN_L line. Thus, in the following steps, check the CAN-C-Mid that is defective. |
(1) Disconnect combination meter connector and ETACS-ECU connector, and measure the resistance at harness side of ETACS-ECU connector.
(2) caution | When measuring the resistance, disconnect the negative battery terminal. For details refer to . |
Ensure that the negative battery terminal is disconnected.
(3) Resistance between ETACS-ECU connector terminal No.17 (CAN_H) and body groundOK: 1 kΩ or more
(4) Resistance between ETACS-ECU connector terminal No.16 (CAN_L) and body groundOK: 1 kΩ or more
Is the check result normal?
<Both of the measurement results show 1 kΩ or more> Go to Step 25. <Either of CAN_H line or CAN_L line the measurement results show less than 1 kΩ> Go to Step 2.
STEP 2. Check the CAN-C-Mid between joint connector (CAN5) and the ETACS-ECU. Resistance measurement at joint connector (CAN5).
caution | A digital multimeter should be used. For details refer to . |
caution | The test wiring harness should be used. For details refer to . |
(1) Disconnect joint connector (CAN5), and measure at the wiring harness side.
(2) caution | When measuring the resistance, disconnect the negative battery terminal. For details refer to . |
Ensure that the negative battery terminal is disconnected.
(3) Resistance between joint connector (CAN5) terminal No.11 (CAN_H) and body groundOK: 1 kΩ or more
(4) Resistance between joint connector (CAN5) terminal No.22 (CAN_L) and body groundOK: 1 kΩ or more
Is the check result normal?
<1 kΩ or more> Go to Step 3. <Less than 1 kΩ > Repair the wiring harness between joint connector (CAN5) and the ETACS-ECU connector.
STEP 3. Check the CAN-C-Mid between joint connector (CAN5) and the A/C-ECU. Resistance measurement at joint connector (CAN5).
caution | A digital multimeter should be used. For details refer to . |
caution | The test wiring harness should be used. For details refer to . |
(1) Disconnect joint connector (CAN5), and measure at the wiring harness side.
(2) caution | When measuring the resistance, disconnect the negative battery terminal. For details refer to . |
Ensure that the negative battery terminal is disconnected.
(3) Resistance between joint connector (CAN5) terminal No.6 (CAN_H) and body groundOK: 1 kΩ or more
(4) Resistance between joint connector (CAN5) terminal No.17 (CAN_L) and body groundOK: 1 kΩ or more
Is the check result normal?
<1 kΩ or more> Go to Step 6. <Less than 1 kΩ > Go to Step 4.
STEP 4. Scan tool (M.U.T.-III) CAN bus diagnostics [A/C-ECU connector disconnected]
STEP 5. Scan tool (M.U.T.-III) CAN bus diagnostics (retest the system)
STEP 6. Check the CAN-C-Mid between joint connector (CAN5) and the power liftgate control unit <Vehicles with power liftgate>. Resistance measurement at joint connector (CAN5).
STEP 7. Scan tool (M.U.T.-III) CAN bus diagnostics [power liftgate control unit connector disconnected]
STEP 8. Scan tool (M.U.T.-III) CAN bus diagnostics (retest the system)
STEP 9. Check the CAN-C-Mid between joint connector (CAN5) and the camera-ECU <Vehicles with multi around monitor>. Resistance measurement at joint connector (CAN5).
STEP 10. Scan tool (M.U.T.-III) CAN bus diagnostics [camera-ECU connector disconnected]
STEP 11. Scan tool (M.U.T.-III) CAN bus diagnostics (retest the system)
STEP 12. Check the CAN-C-Mid between joint connector (CAN5) and the radio and CD player. Resistance measurement at joint connector (CAN5).
STEP 13. Scan tool (M.U.T.-III) CAN bus diagnostics [radio and CD player connector disconnected]
STEP 14. Scan tool (M.U.T.-III) CAN bus diagnostics (retest the system)
STEP 15. Check the CAN-C-Mid between joint connector (CAN5) and the multivision display connector <Vehicles with smartphone link display audio>. Resistance measurement at joint connector (CAN5).
STEP 16. Scan tool (M.U.T.-III) CAN bus diagnostics [multivision display connector <Vehicles with smartphone link display audio> disconnected]
STEP 17. Scan tool (M.U.T.-III) CAN bus diagnostics (retest the system)
STEP 18. Check the CAN-C-Mid between joint connector (CAN5) and the OSS-ECU. Resistance measurement at joint connector (CAN5).
STEP 19. Scan tool (M.U.T.-III) CAN bus diagnostics [OSS-ECU connector disconnected]
STEP 20. Scan tool (M.U.T.-III) CAN bus diagnostics (retest the system)
STEP 21. Check the CAN-C-Mid between joint connector (CAN5) and the KOS-ECU. Resistance measurement at joint connector (CAN5).
STEP 22. Scan tool (M.U.T.-III) CAN bus diagnostics [KOS-ECU connector disconnected]
STEP 23. Scan tool (M.U.T.-III) CAN bus diagnostics (retest the system)
STEP 24. Check the CAN-C-Mid between joint connector (CAN5) and the combination meter. Resistance measurement at joint connector (CAN5).
caution | A digital multimeter should be used. For details refer to . |
caution | The test wiring harness should be used. For details refer to . |
(1) Disconnect joint connector (CAN5), and measure at the wiring harness side.
(2) caution | When measuring the resistance, disconnect the negative battery terminal. For details refer to . |
Ensure that the negative battery terminal is disconnected.
(3) Resistance between joint connector (CAN5) terminal No.9 (CAN_H) and body groundOK: 1 kΩ or more
(4) Resistance between joint connector (CAN5) terminal No.20 (CAN_L) and body groundOK: 1 kΩ or more
(5) caution | Strictly observe the specified wiring harness repair procedure. For details refer to . |
Is the check result normal?
<1 kΩ or more> Repair intermediate connector C-26. <Less than 1 kΩ > Repair the wiring harness between joint connector (CAN5) and the combination meter connector.
STEP 25. Scan tool (M.U.T.-III) CAN bus diagnostics [combination meter connector disconnected]
STEP 26. Scan tool (M.U.T.-III) CAN bus diagnostics (retest the system)
STEP 27. Scan tool (M.U.T.-III) CAN bus diagnostics [ETACS-ECU connector disconnected]
STEP 28. Scan tool (M.U.T.-III) CAN bus diagnostics (retest the system)