Medium and Heavy Trucks
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Intake manifold pressure circuit failed high
Idle Speed is Higher than Targeted Idle Speed
SPN 188/FMI 31
DescriptionIdle Speed Out of range
Monitored ParameterEngine RPM
Typical Enabling ConditionsEngine RPM = idle
Execution FrequencyContinuous when enabling conditions met
Typical Duration10 Seconds
VerificationEngine Idle (1 minute)
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