Diagnostic Aids

Check for a faulty bulb or fuse. An open in SERVICE THROTTLE SOON light control circuit will cause DTC 49 to set.

Fig 1: DTC 49 Schematic ("G" Series) Service Throttle Soon Light Circuit Fault

Fig 2: DTC 49 Schematic ("P" Series) Service Throttle Soon Light Circuit Fault

Fig 3: DTC 49 Flow Chart (All Models) Service Throttle Soon Light Circuit Fault