Item

Detecting Condition

Possible Cause

DTC Strategy

● Circuit continuity check

● Opne or short in power circuit

● Open or short in water heater relay control circuit

● Faulty relay

● Faulty ECM

Enable Conditions

● Ignition on

Threshold Value

● Open or short for water heater relay control circuit.

Diagnostic Time

● 1 sec.

MIL

Fuel Limit

Fuel Cut

EGR Off

● No

● No

● No

● No

Fail safe

● EGR valve deactivited

● Fuel quantity limitation