Section 07 ENGINE MANAGEMENT (DI)
Subsection 03 (DIAGNOSTIC PROCEDURES)
System Failures
Refers to operating conditions outside normal and/or safe ranges such as demand system failures, ex-
treme voltages, over temperature conditions or low fuel/oil levels.
PROBLEM INFO CENTER RED LED BUZZER
BUZZER
CODE
LIMP HOME
MODE ➀
Manifold air pressure
sensor (MAPS), ATM
fault (bad atmospheric
pressure reading)
“MAINT” ON OFF
7
Limited RPM
Throttle “MAINT”
position sensor
(single TPS)
“MAINT” ON ON 3 Limited RPM
Throttle position sensor
(dual TPS)
“MAINT”
ON ON
5 Idle RPM
Throttle position sensor
(single adaption fault)
None OFF OFF
7
None
Throttle position sensor
(dual adaption fault)
“MAINT”
ON OFF
7 Limited RPM
Sensor supply fault
(TPS and MAPS)
“MAINT”
ON ON/OFF
5/(7)
Limited RPM (code
7 and idle RPM if
both in fault)
Encoder (CPS) fault
(bad pattern)
“MAINT”
ON OFF
7 Limited RPM
Low battery voltage “12 V LOW” ON OFF
7
None
Very low battery voltage
“12 V LOW”
“MAINT”
ON ON
5
Limited RPM
High battery voltage “MAINT”
ON OFF
7 None
Very high battery voltage “MAINT” ON OFF
7
Idle RPM
High water temperature “HI-TEMP” ON ON
1
None
Exhaust over
temperature
“HI-TEMP” ON ON 3 None
Low oil level “OIL-LOW” ON ON 6 None
Low fuel level
“FUEL-LO” ON ON
5 None
Setup fault (TDC or TPS
not set on a new MPEM)
“MAINT”
ON OFF
7
Idle RPM
MPEM fault “MAINT” ON OFF
7
Engine will not start
➀ To see how the normal operation is recovered from the limp home mode, see the DI FAULT CODES
CHART elsewhere in this section. Look in column “Normal operation resumes if fault removed
and...”.
380 smr2004-Complete Line Up
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