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TROUBLESHOOTING CONTROLLER AREA NETWORK (CAN) 54C-24 STEP 20. Check the CAN-C between joint CAUTION A digital multimeter should be used. For details CAUTION The test wiring harness should be used. For (1) Disconnect joint connector (CAN-HI), and measure at the wiring harness side. (2) Connect the negative battery terminal, and turn the ignition switch to the ON position. (3) Voltage between joint connector (CAN-HI) terminal No.30 (CAN_H) and body earth OK: 4.0 V or less (4) Voltage between joint connector (CAN-HI) terminal No.29 (CAN_L) and body earth OK: 4.0 V or less (5) Disconnect the negative battery terminal. CAUTION Strictly observe the specified wiring harness Q: Is the check result normal? YES : <4.0 V or less> Go to Step 23. NO : <More than 4.0 V> Go to Step 21. STEP 21. M.U.T.-III CAN bus diagnostics by using the M.U.T.-III. ACC00052 ACC00052 M.U.T. : Red section on screen JC ETACS KOS AUDIO SRS OSS ABS/ASC CVT ENGINE EPS SAS AWC MMCS A/C ETG METER Corner JC JC AB (2) Diagnose CAN-C, and check if M.U.T.-III screen is as shown in the illustration. Q: Does M.U.T.-III screen correspond to the illustration? YES : Repair the wiring harness between joint connector (CAN-HI) and the SRS-ECU NO : Check the SRS-ECU connector, and repair STEP 22. M.U.T.-III CAN bus diagnostics (retest Q: Is the check result normal? YES : The trouble can be an intermittent malfunction (Refer to GROUP 00 − How to use Troubleshooting/inspection Service − How to Cope with Intermittent Malfunction ). NO : Check the SRS-ECU connector, and repair STEP 23. Check the CAN-C between joint CAUTION A digital multimeter should be used. For details CAUTION The test wiring harness should be used. For . (1) Disconnect joint connector (CAN-HI), and measure at the wiring harness side. (2) Connect the negative battery terminal, and turn the ignition switch to the ON position. (3) Voltage between joint connector (CAN-HI) terminal No.9 (CAN_H) and body earth OK: Less than 1.0 V (4) Voltage between joint connector (CAN-HI) terminal No.20 (CAN_L) and body earth OK: Less than 1.0 V (5) Disconnect the negative battery terminal. CAUTION Strictly observe the specified wiring harness Q: Is the check result normal? |