TM 5-3805-290-23-1
TROUBLESHOOTING SYMPTOM INDEX - CONTINUED
0007 00
TROUBLESHOOTING WITH A DIAGNOSTIC CODE - CONTINUED
ENGINE ECM - CONTINUED
0007 00
Table 1. MID 036 - Engine Control - Continued.
TROUBLE-
CID
SHOOTING
FMI
FAULT
PROCEDURE
CODE
DESCRIPTION
FAULT CONDITIONS/EFFECTS
PAGE
0320 02
Speed and Timing Sensor This code is generated when signal for speed/timing sensor is
Loss of Signal.
intermittent or lost for less than one second. This speed/timing sensor
is located near flywheel housing. ECM will use speed/timing sensor in
fuel injection pump to determine engine speed. ECM will log diagnostic
code. When this code is generated, ECM will derate engine to a
maximum speed of 1,200 rpm. If signal is lost from both engine speed
and timing sensors, ECM will shut down engine. ECM will not allow
engine to restart while diagnostic codes are active.
0320 11
Speed and Timing Sensor This code is generated when signal for speed/timing sensor is lost. ECM
Mechanical Failure.
will use speed/timing sensor in fuel injection pump to determine engine
speed. ECM will log diagnostic code. When this code is generated,
ECM will derate engine to a maximum speed of 1,200 rpm. If signal is
lost from both engine speed/timing sensors, ECM will shut down
engine. ECM will not allow engine to restart while diagnostic codes are
active.
0342 02
Loss of Secondary
This code is generated when signal for speed/timing sensor is
Engine Speed Signal.
intermittent or lost for less than one second. If only 0342-02 is active,
problem is not a fault with electrical supply for fuel injection pump.
Both 174-02 and 342-02 diagnostic codes will be active if fuel injection
pump has suffered a complete failure of electrical supply. Also, both
174-02 and 342-02 diagnostic codes will be active if there has been a
communication fault between ECM and CAN data link for fuel
injection pump. ECM will log diagnostic code. ECM will derate engine
to a default value or a safe speed. When this code is generated, engine
will shut down.
0774 02
Secondary Throttle
This code is generated when ECM detects erratic data, intermittent data,
Position Sensor Data
or incorrect data. ECM will log diagnostic code. Throttle is ignored by
Erratic.
ECM until fault is repaired. Throttle switch will also be ignored by ECM
until engine start switch has been turned to OFF position and then back
to ON position. ECM will return engine to low idle or to a safe speed
while diagnostic code is active. When this code is generated, engine
speed defaults to low idle or a predetermined safe speed. Engine will
remain at this speed while diagnostic code remains active. Reduction
of speed is determined by engine current speed. When a fault is detected
and engine is above predetermined safe speed, engine will reduce speed
to safe speed. When a fault is detected and engine is below
predetermined safe speed, engine will match correct speed.
0007 00-9
