DESCRIPTION:
Fan stage 1 circuit failed open.
MONITORED PARAMETER:
Fan control solenoid.
TYPICAL ENABLING CONDITIONS:
Always enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCY:
Always enabled
TYPICAL DURATION:
2 seconds
DASH LAMPS:
CEL
ENGINE REACTION:
None
VERIFICATION:
Engine Idle: One minute.
PROBABLE CAUSES:
1. Wiring between the fan control solenoid and the 120-pin MCM connector.
2. Fan control solenoid failure.
Detroit
ALLISON
CAT
Cumminz
ISB CM550 (1990-94)
ISB CM850 (2003-06)ISB4.5 CM2150ISB6.7 CM2150 (2007-09)ISB6.7 CM2350 (2013-17)ISC CM2150 (2007-09)ISL CM850 (2003-06)ISM CM870 (2003-06)ISM CM875 (2003-06)ISX CM870 (2003-06)ISX11.9 CM2250 (2010-12)ISX12 CM2250 (2010-12)ISX15 CM2250 (2010-12)X12 CM2350 X119B (2018 & Newer)X15 CM2350 X116B Performance Series (2018 & Newer)X15 CM2450 X124B (2018 & Newer)
VOLVO
PACCAR
Volvo Engine
Eaton
Detroit
ALLISON
CAT
Cumminz
ISB CM550 (1990-94)ISB CM850 (2003-06)ISB4.5 CM2150ISB6.7 CM2150 (2007-09)ISB6.7 CM2350 (2013-17)ISC CM2150 (2007-09)ISL CM850 (2003-06)ISM CM870 (2003-06)ISM CM875 (2003-06)ISX CM870 (2003-06)ISX11.9 CM2250 (2010-12)ISX12 CM2250 (2010-12)ISX15 CM2250 (2010-12)X12 CM2350 X119B (2018 & Newer)X15 CM2350 X116B Performance Series (2018 & Newer)X15 CM2450 X124B (2018 & Newer)VOLVO
PACCAR
Volvo Engine
Eaton
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