ISB/ISBe Series Engines – FAULT CODE 382

Intake Air Heater Number 2 Circuit Error


Overview

CODE REASON EFFECT
Fault Code: 382
PID: S237
SPN: 626
FMI: 11
LAMP: Yellow
SRT: 

Error detected in the cold start aid relay 2 enable circuit.

Intake air heater number 2 can be on or off all of the time or is damaged.

Intake Air Heater Number 2 Circuit Error
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Circuit Description

The intake air heater improves starting and white smoke control in cold ambient conditions. The ECM controls relays that switch power to the air heater. There are two heating coils in the heater that are individually controlled by the ECM.

Component Location

The intake air heater is located at the air inlet connection into the intake manifold. The location of the heater relays will vary with OEM.

Shop Talk

  • These faults could also indicate the intake air heater circuits are shorted to battery (+). This would command the grids to be on full time. This will drain the batteries, burn out grids, and/or destroy intake gaskets.
  • The intake air heater circuits will only activate when intake manifold temperature is below 19°C [66°F] when the keyswitch is in the ON position.
  • If the intake air heaters are not installed and Fault Code 381 or 382 is active, then use INSITE™ to disable this feature, “Intake Air Heater.”

Refer to Troubleshooting Fault Code t05-382

Last Modified:  26-Oct-2010