DTC 01

Fig. 21 Code 1: RAM Standby Power Loss:

DIAGNOSTIC TROUBLE CODE (DTC) 1

When the ignition is turned on, the TCCM conducts a self-test to determine that it retains the same memory that it had when the ignition was last turned off. This self-test indicates whether or not the RAM standby power supply to the TCCM connector pin C6 was interrupted, which would result in clearing of the trouble code memory. If the self-test fails, the stored DTC's are cleared and the "RAM Standby Power Loss", DTC #1 is flagged. DTC #1 automatically clears after five successive ignition cycles.