General Information: DTC Detecting Condition

DTC DETECTING CONDITION AND POSSIBLE CAUSES

Item	Detecting Condition		Possible Cause
CASE 1	DTC Strategy	Initial pattern check	Open or short to chassis ground between TCM signal and ECM Short to battery between TCM and ECM Message timeout from TCM Faulty TCM Signal validation
Enable Conditions	Battery voltage > 10V
Threshold Value	TLOW > 2.5 and THIGH < 0.03 TLOW < 2.5 and THIGH > 0.5
Diagnostic Time	2.5 sec. Continuous
Case 2	DTC Strategy	Signal validation
Enable Conditions	Battery voltage > 10V
Threshold Value	TLOW > 2.5
Diagnostic Time	2.5 sec. Continuous