ECM Circuit Check

Proceed trouble diagnosis according to the check sheet results (example).
Case 1: Replace ECM.
Case 2: Replace ABS/TCS control unit. Case 3: Replace TCM.
Case 4: Check ECM Circuit. Refer to ECM CIRCUIT CHECK.
Case 5: Check ABS/TCS control unit Circuit. Refer to ABS/TCS CONTROL UNIT CIRCUIT CHECK ABS/TCS Control Unit Circuit Check.
Case 6: Check TCM Circuit. Refer to TCM CIRCUIT CHECK TCM Circuit Check.
Case 7: Check CAN communication Circuit. Refer to CAN COMMUNICATION CIRCUIT CHECK CAN Communication Circuit Check.

Step 1 - 2:

ECM CIRCUIT CHECK