Service manual

G420F(FE) Service Manual Chapter 9. Advanced Diagnostics 284
Table 1. Fault List Definitions (cont’d.)
FAULT DESCRIPTION
CODE
(MI04 CODE)
HbridgeFault_ETC
(Electronic Throttle Control Driver has Failed) Indeterminate
fault on Hbrid
g
e driver for Electronic Throttle Control.
Possibly either ETC+ or ETC- driver signals have been
shorted to ground
491
(29)
HardOverspeed
Engine speed has exceeded the third level (3 of 3) of
overspeed protection
571
(57)
IATRangeHigh
Intake Air Temperature Sensor Input is High normally set if
the IAT temperature sensor wire has been disconnected, the
circuit has opened to the SECM, or a short to Vbatt has
occurred.
381
(38)
IATRangeLow
Intake Air Temperature Sensor Input is Low normally set if
the IAT temperature sensor wire has shorted to chassis
ground or the sensor has failed.
371
(37)
IAT_IR_Fault Intake Air Temperature not changing as expected 391
Inj1Open
Gasoline Injector 1 open circuit, broken injector 1 wire or
defective injector
131
Inj2Open
Gasoline Injector 2 open circuit, broken injector 2 wire or
defective injector
132
Inj3Open
Gasoline Injector 3 open circuit, broken injector 3 wire or
defective injector
133
Inj4Open
Gasoline Injector 4 open circuit, broken injector 4 wire or
defective injector
134
Inj5Open
Gasoline Injector 5 open circuit, broken injector 5 wire or
defective injector
135
Inj6Open
Gasoline Injector 6 open circuit, broken injector 6 wire or
defective injector
136
Inj7Open
Gasoline Injector 7 open circuit, broken injector 7 wire or
defective injector
137
Inj8Open
Gasoline Injector 8 open circuit, broken injector 8 wire or
defective injector
138
LSDFault_CSValve
Cold Start Valve Fault, signal has opened or shorted to
ground or power or defective cold start valve
713