INSPECTION PROCEDURE
HINT
- Refer to inspection procedure for CAN communication system. Refer to «SYSTEM DESCRIPTION»(ref-396655-S13852520692011050900000) .
- If the CAN communication malfunctions, the ECU cannot receive the current data from the ECM. However, reading the Data List as the first step of troubleshooting is effective to find malfunctions.
- The malfunction area can be checked using the BUS CHECK function of Techstream. Refer to «DIAGNOSIS SYSTEM»(ref-396655-S14818501412011050900000) .
Scheme 411
- INSPECT ECU TERMINAL VOLTAGE (+B AND IG2 TERMINAL) Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Value +B (A9-2)- Body ground Always 10 to 14 V IG2 (A9-10) - GND (A9-12) Engine switch on (IG) 10 to 14 V OK --> CHECK FOR INTERMITTENT PROBLEMS NG: Go to next step
- CHECK HARNESS AND CONNECTOR (ACTIVE CONTROL ENGINE MOUNT ECU - BODY GROUND) Disconnect the active control engine mount ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition GND (A9-12) - Body ground Below 1 ohms Reconnect the active control engine mount ECU connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ACTIVE CONTROL ENGINE MOUNT ECU - BODY GROUND) OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ACTIVE CONTROL ENGINE MOUNT ECU - BATTERY)