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4JA1-TC/4JH1-TC ENGINE DRIVEABILITY AND EMISSIONS 6E–167 DIAGNOSTIC TROUBLE CODE (DTC) P0380 (SYMPTOM CODE 4) (FLASH CODE 66) GLOW RELAY CIRCUIT VOLTAGE LOW DIAGNOSTIC TROUBLE CODE (DTC) P0380 (SYMPTOM CODE 8) (FLASH CODE 66) GLOW RELAY CIRCUIT VOLTAGE HIGH Condition for setting the DTC and action taken when the DTC sets Circuit Description The voltage on the coil of the relay glow plug is supplied In the after glow phase the lamp is not illuminated but Flash Code Code Symptom Code MIL DTC Name DTC Setting Condition Fail-Safe (Back Up) 66 P0380 4 ON Glow Relay Circuit Voltage Glow relay circuit open or No fail-safe function. 8 ON Glow Relay Circuit Voltage Glow relay circuit short to volt- Resister A/C ECM Battery Glow Glow Glow 0.5 0.5 0.5 0.5 41 0.5 33 5.0 0.5 0.5 0.5 0.5 0.5 0.5 A/C Heater Blower A/C A/C Pressure 5.0 Electronic µP Batt µP Batt IC Engine |