STEP 1. Connector check: C-149 intermediate connector
STEP 2. 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 connector, and measure at its female-side intermediate connector (at the front wiring harness side).
(2) Turn the ignition switch to the "LOCK" (OFF) position.
(3) caution | When measuring the resistance, disconnect the negative battery terminal. For details refer to . |
Ensure that the negative battery terminal is disconnected.
(4) Resistance between C-149 intermediate connector terminal Nos.19 and 18OK: 120 ± 20 ohms
Is the check result normal?
<Within 120 ± 20 ohms> Go to Step 16. <Not within 120 ± 20 ohms> Go to Step 3.
STEP 3. Connector check: joint connector (CAN3)
STEP 4. Connector check: joint connector (CAN4)
STEP 5. 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 the connector, and measure at the wiring harness side.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
(3) caution | When measuring the resistance, disconnect the negative battery terminal. For details refer to . |
Ensure that the negative battery terminal is disconnected.
(4) Resistance between joint connector (CAN3) terminal Nos.10 and 21OK: 120 ± 20 ohms
Is the check result normal?
<Within 120 ± 20 ohms> Go to Step 10. : <Not within 120 ± 20 ohms> Go to Step 6. : <Not within 120 ± 20 ohms> Go to Step 8.
STEP 6. 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 the connector, and measure at the wiring harness side.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
(3) caution | When measuring the resistance, disconnect the negative battery terminal. For details refer to . |
Ensure that the negative battery terminal is disconnected.
(4) Resistance between joint connector (CAN4) terminal Nos.9 and 20OK: 1 kΩ or more
Is the check result normal?
<1 kΩ or more> Go to Step 8. <Less than 1 kΩ> Go to Step 7.
STEP 7. Resistance measurement at ACC/FCM-ECU connector.
caution | A digital multimeter should be used. For details refer to . |
(1) Remove the ACC/FCM-ECU, and measure at the equipment side.
(2) Resistance between ACC/FCM-ECU connector terminal Nos.6 and 1OK: 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 (CAN4) and the ACC/FCM-ECU connector. <Less than 1 kΩ> Check the ACC/FCM-ECU connector, and repair if necessary. If the ACC/FCM-ECU connector is in good condition, replace the ACC/FCM-ECU.
STEP 8. 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 the connector, and measure at the wiring harness side.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
(3) caution | When measuring the resistance, disconnect the negative battery terminal. For details refer to . |
Ensure that the negative battery terminal is disconnected.
(4) Resistance between joint connector (CAN4) terminal Nos.10 and 21OK: 120 ± 20 ohms
caution | Strictly observe the specified wiring harness repair procedure. For details refer to . |
Is the check result normal?
: <Within 120 ± 20 ohms> Repair the wiring harness between joint connector (CAN4) and the joint connector (CAN3).
<Not within 120 ± 20 ohms> Go to Step 9.
STEP 9. Resistance measurement at ECM connector.
caution | A digital multimeter should be used. For details refer to . |
(1) Remove the ECM, and measure at the equipment side.
(2) Resistance between ECM connector terminal Nos.151 and 152OK: 120 ± 20 ohms
caution | Strictly observe the specified wiring harness repair procedure. For details refer to . |
Is the check result normal?
<Within 120 ± 20 ohms> Repair the wiring harness between joint connector (CAN4) and the ECM connector. <Not within 120 ± 20 ohms> Check the ECM connector, and repair if necessary. If the ECM connector is in good condition, replace the ECM.
STEP 10. 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 the connector, and measure at the wiring harness side.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
(3) caution | When measuring the resistance, disconnect the negative battery terminal. For details refer to . |
Ensure that the negative battery terminal is disconnected.
(4) Resistance between joint connector (CAN3) terminal Nos.5 and 16OK: 1 kΩ or more
Is the check result normal?
<1 kΩ or more> Go to Step 12. <Less than 1 kΩ> Go to Step 11.
STEP 11. Resistance measurement at TCM connector.
caution | A digital multimeter should be used. For details refer to . |
(1) Remove the TCM, and measure at the equipment side.
(2) Resistance between TCM connector terminal Nos.9 and 10OK: 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 TCM connector. <Less than 1 kΩ> Check the TCM connector, and repair if necessary. If the TCM connector is in good condition, replace the TCM.
STEP 12. 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 the connector, and measure at the wiring harness side.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
(3) caution | When measuring the resistance, disconnect the negative battery terminal. For details refer to . |
Ensure that the negative battery terminal is disconnected.
(4) Resistance between joint connector (CAN3) terminal Nos.8 and 19OK: 1 kΩ or more
Is the check result normal?
<1 kΩ or more> Go to Step 14. <Less than 1 kΩ> Go to Step 13.
STEP 13. Resistance measurement at ASC-ECU connector.
caution | A digital multimeter should be used. For details refer to . |
(1) Remove the ASC-ECU, and measure at the equipment side.
(2) Resistance between ASC-ECU connector terminal Nos.11 and 10OK: 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 ASC-ECU connector. <Less than 1 kΩ> Check the ASC-ECU connector, and repair if necessary. If the ASC-ECU connector is in good condition, replace the ASC-ECU.
STEP 14. 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 the connector, and measure at the wiring harness side.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
(3) caution | When measuring the resistance, disconnect the negative battery terminal. For details refer to . |
Ensure that the negative battery terminal is disconnected.
(4) Resistance between joint connector (CAN3) terminal Nos.9 and 20OK: 1 kΩ or more
Is the check result normal?
<1 kΩ or more> Repair the wiring harness between joint connector (CAN3) and C-149 intermediate connector. <Less than 1 kΩ> Go to Step 15.
STEP 15. Resistance measurement at EPS-ECU connector.
caution | A digital multimeter should be used. For details refer to . |
(1) Remove the EPS-ECU, and measure at the equipment side.
(2) Resistance between EPS-ECU connector terminal Nos.26 and 25OK: 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> Check intermediate connector, and repair if necessary. If the intermediate connector is in good condition, repair the wiring harness between joint connector (CAN3) and the EPS-ECU connector. <Less than 1 kΩ> Check the EPS-ECU connector, and repair if necessary. If the EPS-ECU connector is in good condition, replace the EPS-ECU.
STEP 16. Connector check: joint connector (CAN1)
STEP 17. 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) Turn the ignition switch to the "LOCK" (OFF) position.
(3) caution | When measuring the resistance, disconnect the negative battery terminal. For details refer to . |
Ensure that the negative battery terminal is disconnected.
(4) Resistance between joint connector (CAN1) terminal Nos.8 and 19OK: 120 ± 20 ohms
Is the check result normal?
: <Within 120 ± 20 ohms> Go to Step 19. : <Within 120 ± 20 ohms> Go to Step 21. : <Not within 120 ± 20 ohms> Go to Step 18.
STEP 18. Resistance measurement at ETACS-ECU connector.
caution | A digital multimeter should be used. For details refer to . |
(1) Remove the ETACS-ECU, and measure at the equipment side.
(2) Resistance at ETACS-ECU connector terminal Nos.19 and 18OK: 120 ± 20 ohms
caution | Strictly observe the specified wiring harness repair procedure. For details refer to . |
Is the check result normal?
<Within 120 ± 20 ohms> Repair the wiring harness between joint connector (CAN1) and the ETACS-ECU connector. <Not within 120 ± 20 ohms> Check the ETACS-ECU connector, and repair if necessary. If the ETACS-ECU connector is in good condition, replace the ETACS-ECU.
STEP 19. 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) Turn the ignition switch to the "LOCK" (OFF) position.
(3) caution | When measuring the resistance, disconnect the negative battery terminal. For details refer to . |
Ensure that the negative battery terminal is disconnected.
(4) Resistance between joint connector (CAN1) terminal Nos.11 and 22OK: 1 kΩ or more
Is the check result normal?
<1 kΩ or more> Go to Step 21. <Less than 1 kΩ> Go to Step 20.
STEP 20. Resistance measurement at AWC-ECU connector.
caution | A digital multimeter should be used. For details refer to . |
(1) Remove the AWC-ECU, and measure at the equipment side.
(2) Resistance at AWC-ECU connector terminal Nos.2 and 8OK: 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> Check intermediate connector or joint connector (CAN2), and repair if necessary. If the connector is in good condition, repair the wiring harness between joint connector (CAN1) and the AWC-ECU connector. <Less than 1 kΩ> Check the AWC-ECU connector, and repair if necessary. If the AWC-ECU connector is in good condition, replace the AWC-ECU.
STEP 21. 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) Turn the ignition switch to the "LOCK" (OFF) position.
(3) caution | When measuring the resistance, disconnect the negative battery terminal. For details refer to . |
Ensure that the negative battery terminal is disconnected.
(4) Resistance between joint connector (CAN1) terminal Nos.11 and 22OK: 1 kΩ or more
Is the check result normal?
<1 kΩ or more> Go to Step 23. <Less than 1 kΩ> Go to Step 22.
STEP 22. Resistance measurement at FCM/LDW/AHB-ECU connector.
caution | A digital multimeter should be used. For details refer to . |
(1) Remove the FCM/LDW/AHB-ECU, and measure at the equipment side.
(2) Resistance at FCM/LDW/AHB-ECU connector terminal Nos.5 and 13OK: 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> Check intermediate connector or joint connector (CAN2), and repair if necessary. If the connector is in good condition, repair the wiring harness between joint connector (CAN1) and the FCM/LDW/AHB-ECU connector. <Less than 1 kΩ> Check the FCM/LDW/AHB-ECU connector, and repair if necessary. If the FCM/LDW/AHB-ECU connector is in good condition, replace the FCM/LDW/AHB-ECU.
STEP 23. 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) Turn the ignition switch to the "LOCK" (OFF) position.
(3) caution | When measuring the resistance, disconnect the negative battery terminal. For details refer to . |
Ensure that the negative battery terminal is disconnected.
(4) Resistance between joint connector (CAN1) terminal Nos.4 and 15OK: 1 kΩ or more
Is the check result normal?
<1 kΩ or more> Go to Step 25. <Less than 1 kΩ> Go to Step 24.
STEP 24. Resistance measurement at electric parking brake ECU connector.
caution | A digital multimeter should be used. For details refer to . |
(1) Remove the electric parking brake ECU, and measure at the equipment side.
(2) Resistance at electric parking brake ECU connector terminal Nos.40 and 30OK: 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 (CAN1) and the electric parking brake ECU connector. <Less than 1 kΩ> Check the electric parking brake ECU connector, and repair if necessary. If the electric parking brake ECU connector is in good condition, replace the electric parking brake ECU.
STEP 25. 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) Turn the ignition switch to the "LOCK" (OFF) position.
(3) caution | When measuring the resistance, disconnect the negative battery terminal. For details refer to . |
Ensure that the negative battery terminal is disconnected.
(4) Resistance between joint connector (CAN1) terminal Nos.10 and 21OK: 1 kΩ or more
Is the check result normal?
<1 kΩ or more> Go to Step 27. <Less than 1 kΩ> Go to Step 26.
STEP 26. Resistance measurement at column switch connector.
caution | A digital multimeter should be used. For details refer to . |
(1) Remove the column switch, and measure at the equipment side.
(2) Resistance at column switch connector terminal Nos.13 and 14OK: 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 (CAN1) and the column switch connector. <Less than 1 kΩ> Check the column switch connector, and repair if necessary. If the column switch connector is in good condition, replace the column switch.
STEP 27. 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) Turn the ignition switch to the "LOCK" (OFF) position.
(3) caution | When measuring the resistance, disconnect the negative battery terminal. For details refer to . |
Ensure that the negative battery terminal is disconnected.
(4) Resistance between joint connector (CAN1) terminal Nos.3 and 14OK: 1 kΩ or more
Is the check result normal?
<1 kΩ or more> Go to Step 29. <Less than 1 kΩ> Go to Step 28.
STEP 28. Resistance measurement at occupant classification-ECU connector.
caution | A digital multimeter should be used. For details refer to . |
(1) Remove the occupant classification-ECU, and measure at the equipment side.
(2) Resistance at occupant classification-ECU connector terminal Nos.12 and 14OK: 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> Check the front seat assembly (passenger's side) connector, and repair if necessary. If the front seat assembly (passenger's side) connector is in good condition, repair the wiring harness between joint connector (CAN1) and the occupant classification-ECU connector. <Less than 1 kΩ> Check the occupant classification-ECU connector, and repair if necessary. If the occupant classification-ECU connector is in good condition, replace the occupant classification-ECU.
STEP 29. 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) Turn the ignition switch to the "LOCK" (OFF) position.
(3) caution | When measuring the resistance, disconnect the negative battery terminal. For details refer to . |
Ensure that the negative battery terminal is disconnected.
(4) Resistance between joint connector (CAN1) terminal Nos.9 and 20OK: 1 kΩ or more
Is the check result normal?
: <1 kΩ or more> Go to Step 31. : <1 kΩ or more> Go to Step 33. <Less than 1 kΩ> Go to Step 30.
STEP 30. Resistance measurement at SRS-ECU connector.
caution | A digital multimeter should be used. For details refer to . |
(1) Remove the SRS-ECU, and measure at the equipment side.
(2) Resistance at SRS-ECU connector terminal Nos.25 and 24OK: 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 (CAN1) and the SRS-ECU. <Less than 1 kΩ> Check the SRS-ECU connector, and repair if necessary. If the SRS-ECU connector is in good condition, replace the SRS-ECU.
STEP 31. 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) Turn the ignition switch to the "LOCK" (OFF) position.
(3) caution | When measuring the resistance, disconnect the negative battery terminal. For details refer to . |
Ensure that the negative battery terminal is disconnected.
(4) Resistance between joint connector (CAN1) terminal Nos.5 and 16OK: 1 kΩ or more
Is the check result normal?
<1 kΩ or more> Go to Step 33. <Less than 1 kΩ> Go to Step 32.
STEP 32. Resistance measurement at gateway-ECU connector.
caution | A digital multimeter should be used. For details refer to . |
(1) Remove the gateway-ECU, and measure at the equipment side.
(2) Resistance at gateway-ECU connector terminal Nos.3 and 2OK: 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 (CAN1) and the gateway-ECU. <Less than 1 kΩ> Check the gateway-ECU connector, and repair if necessary. If the gateway-ECU connector is in good condition, replace the gateway-ECU.
STEP 33. 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 the joint connector (CAN1), and measure at the wiring harness side.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
(3) caution | When measuring the resistance, disconnect the negative battery terminal. For details refer to . |
Ensure that the negative battery terminal is disconnected.
(4) Resistance between joint connector (CAN1) terminal Nos.7 and 18OK: 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 (CAN1) and the C-149 intermediate connector. <Less than 1 kΩ> Check the data link connector, and repair if necessary. If the data link connector is in good condition, repair the wiring harness between joint connector (CAN1) and the data link connector.