|
|
Automatic Transmission – 4L60E – Electrical Diagnosis Page 7C2–30 • records the operating condition at the time the diagnostic fails and stores this information in the Freeze Frame/ Type B – Emission Related DTCs The TCM takes the following actions when a Type B DTC runs and fails. • On the first time a Type B DTC fails: • sets a current Type B DTC that represents the fault condition, and • records the operating conditions at the time the fault sets and stores this information in the Failure Records. • On the second consecutive ignition cycle that a Type B DTC fails: • illuminates the MIL, and • records the operating condition at the time the diagnostic fails and stores this information in the Freeze Conditions for Clearing Type A or Type B DTCs • The current DTC clears when there is no fault condition in the current TCM self-diagnostics. • If there are no DTCs logged after six consecutive ignition cycles, the TCM deactivates the MIL. • Type A or Type B History DTC clears when there is no fault condition after 40 consecutive warm-up cycles. • Use of Tech 2 to clear DTCs. Type C – Non-emission Related DTCs The TCM takes the following action when a Type C DTC runs and fails: • sets a current Type C DTC that represents the fault condition, • records the operating conditions at the time the DTC is logged and stores this information in the Failure Record, N O T E The MIL does not illuminate when a Type C DTC Conditions for Clearing Type C DTCs • The current DTC clears when there is no fault condition in the current TCM self-diagnostics. • Type C History DTC clears when there is no fault condition after 40 consecutive warm-up cycles. • Use of Tech 2 to clear DTCs. Current DTCs A DTC is a Current DTC if the fault condition that triggers the DTC is present during the last TCM self-diagnostics. History DTCs A DTC is a History DTC if the fault condition that triggers the DTC is not present during the last TCM self-diagnostics. 4.7 Diagnostic System Check Description This section procedure is organised in a logical structure that begins with the diagnostic system check. The diagnostic |