STEP 1. Check the CAN-C. Resistance measurement at data link 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 that is defective. |
(1) Disconnect ECM connector and ETACS-ECU connector, and measure the resistance at harness side of data link 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 data link connector terminal No.6 (CAN_H) and body groundOK: 1 kΩ or more
(4) Resistance between data link connector terminal No.14 (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 39. <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. Resistance measurement at C-149 intermediate connector.
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 the intermediate connector, and measure at its female-side intermediate connector (at the front 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 C-149 intermediate connector terminal No.19 (CAN_H) and body groundOK: 1 kΩ or more
(4) Resistance between C-149 intermediate connector terminal No.18 (CAN_L) and body groundOK: 1 kΩ or more
Is the check result normal?
<1 kΩ or more> Go to Step 16. <Less than 1 kΩ > Go to Step 3.
STEP 3. Check the CAN-C between joint connector (CAN3) and the engine control module. Resistance measurement at joint connector (CAN3).
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 (CAN3), 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 (CAN3) terminal No.10 (CAN_H) and body groundOK: 1 kΩ or more
(4) Resistance between joint connector (CAN3) terminal No.21 (CAN_L) and body groundOK: 1 kΩ or more
caution | Strictly observe the specified wiring harness repair procedure. For details refer to . |
Is the check result normal?
<1 kΩ or more> Go to Step 7. : <Less than 1 kΩ > Repair the wiring harness between joint connector (CAN3) and the ECM connector.
: Go to Step 4.
STEP 4. Check the CAN-C between joint connector (CAN4) and the ACC/FCM-ECU. Resistance measurement at joint connector (CAN4).
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 (CAN4), 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 (CAN4) terminal No.9 (CAN_H) and body groundOK: 1 kΩ or more
(4) Resistance between joint connector (CAN4) terminal No.20 (CAN_L) and body groundOK: 1 kΩ or more
caution | Strictly observe the specified wiring harness repair procedure. For details refer to . |
Is the check result normal?
<1 kΩ or more> Repair the wiring harness between joint connector (CAN3) and the ECM connector. <Less than 1 kΩ > Go to Step 5.
STEP 5. Scan tool (M.U.T.-IIISE) CAN bus diagnostics [ACC/FCM-ECU connector disconnected]
STEP 6. Scan tool (M.U.T.-IIISE) CAN bus diagnostics (retest the system)
STEP 7. Check the CAN-C between joint connector (CAN3) and the TCM. Resistance measurement at joint connector (CAN3).
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 (CAN3), 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 (CAN3) terminal No.5 (CAN_H) and body groundOK: 1 kΩ or more
(4) Resistance between joint connector (CAN3) terminal No.16 (CAN_L) and body groundOK: 1 kΩ or more
Is the check result normal?
<1 kΩ or more> Go to Step 10. <Less than 1 kΩ > Go to Step 8.
STEP 8. Scan tool (M.U.T.-IIISE) CAN bus diagnostics [TCM connector disconnected]
STEP 9. Scan tool (M.U.T.-IIISE) CAN bus diagnostics (retest the system)
STEP 10. Check the CAN line between joint connector (CAN3) and the ASC-ECU. Resistance measurement at joint connector (CAN3).
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 (CAN3), 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 (CAN3) terminal No.8 (CAN_H) and body groundOK: 1 kΩ or more
(4) Resistance between joint connector (CAN3) terminal No.19 (CAN_L) and body groundOK: 1 kΩ or more
Is the check result normal?
<1 kΩ or more> Go to Step 13. <Less than 1 kΩ > Go to Step 11.
STEP 11. Scan tool (M.U.T.-IIISE) CAN bus diagnostics [ASC-ECU connector disconnected]
STEP 12. Scan tool (M.U.T.-IIISE) CAN bus diagnostics (retest the system)
STEP 13. Check the CAN line between joint connector (CAN3) and the EPS-ECU. Resistance measurement at joint connector (CAN3).
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 (CAN3), 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 (CAN3) terminal No.9 (CAN_H) and body groundOK: 1 kΩ or more
(4) Resistance between joint connector (CAN3) terminal No.20 (CAN_L) and body groundOK: 1 kΩ or more
Is the check result normal?
<1 kΩ or more> Repair intermediate connector C-149, or the wiring harness between joint connector (CAN3) and the intermediate connector C-149. <Less than 1 kΩ > Go to Step 14.
STEP 14. Scan tool (M.U.T.-IIISE) CAN bus diagnostics [EPS-ECU connector disconnected]
STEP 15. Scan tool (M.U.T.-IIISE) CAN bus diagnostics (retest the system)
STEP 16. Check CAN line between joint connector (CAN1) and the ETACS-ECU. Resistance measurement at joint connector (CAN1).
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 (CAN1), 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 (CAN1) terminal No.8 (CAN_H) and body groundOK: 1 kΩ or more
(4) Resistance between joint connector (CAN1) terminal No.19 (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> Go to Step 17. : <1 kΩ or more> Go to Step 20. : <Less than 1 kΩ > Repair the wiring harness between joint connector (CAN1) and the ETACS-ECU connector.
STEP 17. Check the CAN-C between joint connector (CAN1) and the AWC-ECU. Resistance measurement at joint connector (CAN1).
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 (CAN1), 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 (CAN1) terminal No.11 (CAN_H) and body groundOK: 1 kΩ or more
(4) Resistance between joint connector (CAN1) terminal No.22 (CAN_L) and body groundOK: 1 kΩ or more
Is the check result normal?
<1 kΩ or more> Go to Step 20. <Less than 1 kΩ > Go to Step 18.
STEP 18. Scan tool (M.U.T.-IIISE) CAN bus diagnostics [AWC-ECU connector disconnected]
STEP 19. Scan tool (M.U.T.-IIISE) CAN bus diagnostics (retest the system)
STEP 20. Check the CAN-C between joint connector (CAN1) and the FCM/LDW/AHB-ECU. Resistance measurement at joint connector (CAN1).
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 (CAN1), 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 (CAN1) terminal No.11 (CAN_H) and body groundOK: 1 kΩ or more
(4) Resistance between joint connector (CAN1) terminal No.22 (CAN_L) and body groundOK: 1 kΩ or more
Is the check result normal?
<1 kΩ or more> Go to Step 23. <Less than 1 kΩ > Go to Step 21.
STEP 21. Scan tool (M.U.T.-IIISE) CAN bus diagnostics [FCM/LDW/AHB-ECU connector disconnected]
STEP 22. Scan tool (M.U.T.-IIISE) CAN bus diagnostics (retest the system)
STEP 23. Check the CAN-C between joint connector (CAN1) and the electric parking brake ECU. Resistance measurement at joint connector (CAN1).
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 (CAN1), 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 (CAN1) terminal No.4 (CAN_H) and body groundOK: 1 kΩ or more
(4) Resistance between joint connector (CAN1) terminal No.15 (CAN_L) and body groundOK: 1 kΩ or more
Is the check result normal?
<1 kΩ or more> Go to Step 26. <Less than 1 kΩ > Go to Step 24.
STEP 24. Scan tool (M.U.T.-IIISE) CAN bus diagnostics [electric parking brake ECU connector disconnected]
STEP 25. Scan tool (M.U.T.-IIISE) CAN bus diagnostics (retest the system)
STEP 26. Check the CAN-C between joint connector (CAN1) and the column switch. Resistance measurement at joint connector (CAN1).
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 (CAN1), 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 (CAN1) terminal No.10 (CAN_H) and body groundOK: 1 kΩ or more
(4) Resistance between joint connector (CAN1) terminal No.21 (CAN_L) and body groundOK: 1 kΩ or more
Is the check result normal?
<1 kΩ or more> Go to Step 29. <Less than 1 kΩ > Go to Step 27.
STEP 27. Scan tool (M.U.T.-IIISE) CAN bus diagnostics [column switch connector disconnected]
STEP 28. Scan tool (M.U.T.-IIISE) CAN bus diagnostics (retest the system)
STEP 29. Check the CAN-C between joint connector (CAN1) and the occupant classification-ECU. Resistance measurement at joint connector (CAN1).
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 (CAN1), 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 (CAN1) terminal No.3 (CAN_H) and body groundOK: 1 kΩ or more
(4) Resistance between joint connector (CAN1) terminal No.14 (CAN_L) and body groundOK: 1 kΩ or more
Is the check result normal?
<1 kΩ or more> Go to Step 32. <Less than 1 kΩ > Go to Step 30.
STEP 30. Scan tool (M.U.T.-IIISE) CAN bus diagnostics [occupant classification-ECU connector disconnected]
STEP 31. Scan tool (M.U.T.-IIISE) CAN bus diagnostics (retest the system)
STEP 32. Check the CAN-C between joint connector (CAN1) and the SRS-ECU. Resistance measurement at joint connector (CAN1).
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 (CAN1), 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 (CAN1) terminal No.9 (CAN_H) and body groundOK: 1 kΩ or more
(4) Resistance between joint connector (CAN1) terminal No.20 (CAN_L) and body groundOK: 1 kΩ or more
Is the check result normal?
: <1 kΩ or more> Go to Step 35. : <1 kΩ or more> Go to Step 38. <Less than 1 kΩ > Go to Step 33.
STEP 33. Scan tool (M.U.T.-IIISE) CAN bus diagnostics [SRS-ECU connector disconnected]
STEP 34. Scan tool (M.U.T.-IIISE) CAN bus diagnostics (retest the system)
STEP 35. Check the CAN-C between joint connector (CAN1) and the gateway-ECU. Resistance measurement at joint connector (CAN1).
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 (CAN1), 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 (CAN1) terminal No.5 (CAN_H) and body groundOK: 1 kΩ or more
(4) Resistance between joint connector (CAN1) terminal No.16 (CAN_L) and body groundOK: 1 kΩ or more
Is the check result normal?
<1 kΩ or more> Go to Step 38. <Less than 1 kΩ > Go to Step 36.
STEP 36. Scan tool (M.U.T.-IIISE) CAN bus diagnostics [gateway-ECU connector disconnected]
STEP 37. Scan tool (M.U.T.-IIISE) CAN bus diagnostics (retest the system)
STEP 38. Check the CAN-C between joint connector (CAN1) and the data link connector. Resistance measurement at joint connector (CAN1).
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 (CAN1), 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 (CAN1) terminal No.7 (CAN_H) and body groundOK: 1 kΩ or more
(4) Resistance between joint connector (CAN1) terminal No.18 (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 the intermediate connector C-149, or the wiring harness between joint connector (CAN1) and the intermediate connector C-149. <Less than 1 kΩ > Repair the data link connector, or the wiring harness between joint connector (CAN1) and the data link connector.
STEP 39. Scan tool (M.U.T.-IIISE) CAN bus diagnostics [ECM connector disconnected]
STEP 40. Scan tool (M.U.T.-IIISE) CAN bus diagnostics (retest the system)
STEP 41. Scan tool (M.U.T.-IIISE) CAN bus diagnostics [ETACS-ECU connector disconnected]
STEP 42. Scan tool (M.U.T.-IIISE) CAN bus diagnostics (retest the system)