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TROUBLESHOOTING CONTROLLER AREA NETWORK (CAN) 54C-40 disconnected. (3) Resistance between ETACS-ECU connector terminal No.17 (CAN_H) and body earth by OK: 1 k Ω or more (4) Resistance between ETACS-ECU connector terminal No.16 (CAN_L) and body earth by OK: 1 k Ω or more Q: Is the check result normal? YES <Resistance value is 1 k Ω or more in both CAN_H and CAN_L> : Go to Step 3. NO <Resistance value is less than 1 k Ω in either CAN_H or CAN_L> : Perform diagnosis item 7 "Diagnose shorts in the earth to STEP 3. Check the CAN-C-Mid for short to each CAUTION A digital multimeter should be used. For details CAUTION The test wiring harness should be used. For (1) Turn the ignition switch to the LOCK (OFF) position. CAUTION When measuring the resistance, disconnect the . (2) Ensure that the negative battery terminal is disconnected. (3) Resistance between ETACS-ECU connector terminal Nos.16 and 17 by backprobing OK: 60 ± 10 Ω 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 <Resistance value is less than 60 ± 10 Ω> : Perform diagnosis Item 8 "Diagnose shorts . NO <Resistance value is 1 k Ω or more> : Check the wires between ETACS-ECU connector Diagnosis Item 6: Diagnose shorts in the power supply to CAN-C-Mid. CAUTION • When servicing a CAN bus line, earth yourself by touching a metal object such as an • When the ETACS-ECU of vehicles without KOS is replaced, the encrypted code of the − How to Register Key ID .) TROUBLE JUDGEMENT CONDITIONS The M.U.T.-III judges the trouble when it is impossi- TROUBLESHOOTING HINTS • Malfunction of the wiring harness • Malfunction of the connector • Malfunction of the ETACS-ECU • Malfunction of the A/C-ECU • Malfunction of the KOS-ECU <Vehicles with KOS> • Malfunction of the OSS-ECU <Vehicles with OSS> • Malfunction of the CAN box unit <vehicles with MMCS> • Malfunction of the radio and CD player <vehicles with radio and CD player> • Malfunction of the corner sensor/back sen- sor-ECU <vehicles with reversing sensor sys- • Malfunction of the electric tailgate control unit <vehicles with electric tailgate> • Malfunction of the combination meter |