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DIAGNOSIS TSB Revision CONTROLLER AREA NETWORK (CAN) 54C-145 . FUNCTION If the scan tool MB991958 cannot communicate with . TROUBLE JUDGMENT CONDITIONS If a communication flag is not set for the A/C-ECU . TROUBLESHOOTING HINTS • Malfunction of the connector [joint connector (CAN1), A/C-ECU <vehicles with A/C> or heater • Malfunction of the wiring harness [open circuit between the A/C-ECU <vehicles with A/C> or • Malfunction of the A/C-ECU <vehicles with A/C> or heater control unit <vehicles without A/C> DIAGNOSIS Required Special Tools: • MB991223: Harness Set STEP 1. Check joint connector (CAN1) C-105 and A/C-ECU CAUTION The strand end of the twisted wire should be within 10 cm Q: Are joint connector (CAN1) C-105 and A/C-ECU connector C-22 <vehicles with A/C> or heater control AC708951CE Connector: C-22 C-22 (B) AC708950 Connector: C-105 BL |