Service manual

G420F(FE) Service Manual Chapter 9. Advanced Diagnostics 289
Table 2. Diagnostic Fault Codes (Flash Codes)
DFC PROBABLE FAULT FAULT ACTION*
CORRECTIVE ACTION
FIRST CHECK
12
NONE
Signifies the end of one pass
through the fault list
NONE
None, used as end of the fault list
identification
131
Inj1Open
Gasoline Injector 1 open
circuit, broken injector 1 wire
or defective injector
TurnOnMil
Check INJ1 wiring for an open circuit
SECM (Signal) A5 to Injector 1 Pin A
Switched 12V to Injector 1 Pin B Check
Injector 1 Resistance, 12 to14 ohms
(cold)
132
Inj2Open
Gasoline Injector 2 open
circuit, broken injector 2 wire
or defective injector
TurnOnMil
Check INJ2 wiring for an open circuit
SECM (Signal) A8 to Injector 2 Pin A
Switched 12V to Injector 2 Pin B Check
Injector 2 Resistance, 12 to14 ohms
(cold)
133
Inj3Open
Gasoline Injector 3 open
circuit, broken injector 3 wire
or defective injector
TurnOnMil
Check INJ3 wiring for an open circuit
SECM (Signal) A4 to Injector 3 Pin A
Switched 12V to Injector 3 Pin B Check
Injector 3 Resistance, 12 to14 ohms
(cold)
134
Inj4Open
Gasoline Injector 4 open
circuit, broken injector 4 wire
or defective injector
TurnOnMil
Check INJ4 wiring for an open circuit
SECM (Signal) A7 to Injector 4 Pin A
Switched 12V to Injector 4 Pin B
135
Not Used
Inj5Open
Gasoline Injector 5 open
circuit, broken injector 5 wire
or defective injector
None N/A
136
Not Used
Inj6Open
Gasoline Injector 6 open
circuit, broken injector 6 wire
or defective injector
None N/A
137
Not Used
Inj7Open
Gasoline Injector 7 open
circuit, broken injector 7 wire
or defective injector
None N/A
138
Not Used
Inj8Open
Gasoline Injector 8 open
circuit, broken injector 8 wire
or defective injector
None N/A
141
(14)
ECTRangeLow
Coolant Sensor failure or
shorted to GND
TurnOnMil
Check ECT sensor connector and
wiring for a short to GND
SECM (Signal) Pin B15 To ECT Pin 3
151
(15)
ECTRangeHigh
Coolant sensor disconnected
or open circuit
(1) TurnOnMil
(2) Delayed Engine
Shutdown
(3) CheckEngineLight
Check if ECT sensor connector is
disconnected or for an open ECT
circuit
SECM (Signal) Pin B15 to ECT Pin 3
SECM (Sensor GND) Pin B1 to
ECT Pin 1
(*) Fault actions shown are default values specified by the OEM.