Typical Malfunction Thresholds

TYPICAL MALFUNCTION THRESHOLDS

Communication signal

Lost communication with TCM

CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC U0101)

Connect the intelligent tester to the DLC3.
Turn the engine switch on (IG).
Turn the tester on.
Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.

Read DTCs.

Result

RESULT REFERENCE

Display (DTC output)	Proceed to
U0101	A
U0101 and other DTCs	B

B : GO TO DTC CHART

A : REPLACE ECM