G420E/G424E Tier LP Engine Advanced Diagnostics 57
Table a. MI-04 Diagnostic Fault Codes (Flash Codes)
DFC Probable Fault Action Corrective Action, First Check
65 Pedal2SensorInputLo
APP2 sensor failure or shorted circuit
MIN power Limit Check Acceleration Pedal connector
z Cycle the pedal several times
and check APP2 signal at SECM
PIN 2
66 Pedal2SensorInputHi
APP2 signal disconnected, open
circuit or sensor malfunction
(Expected faults when APP connector
is unplugged
CODES: 61 & 66)
MIN power Limit Check Acceleration Pedal connector
z Check APP2 signal at SECM
PIN 2
67 Pedal2SensorRangeLo
APP2 potentiometer malfunction.
Improper APP2 reading may be due
to dirt or oxidation on the sensor
traces.
Stored Fault Code
(MIL Only)
Check Acceleration Pedal connector
z Cycle the pedal several times
and check APP2 signal at SECM
PIN 2
68 Pedal2SensorRangeHi
APP2 potentiometer malfunction.
Improper APP2 reading may be due
to dirt or oxidation on the sensor
traces.
Stored Fault Code
(MIL Only)
Check Acceleration Pedal connector
z Cycle the pedal several times
and check APP2 signal at SECM
PIN 2
69 Pedal1ToPedal2Difference
Measured APP2 pedal position signal
is different than APP1 signal
MIN power Limit Check Acceleration Pedal connector
z Cycle the pedal several times
and check APP1 signal at SECM
PIN 15
z Check APP2 signal at SECM
PIN 2
71 AFRTrimValveOutput
FTV modulation driver signal fault
Stored Fault Code
(MIL, Disable Adaptive
learns)
Check FTV for an open wire or FTV
connector being disconnected
FTV PIN A (SIGNAL) TO PIN B
(PWR)
Check FTV for an open coil by
disconnecting the FTV connector and
measuring the resistance (~26Ω +/-
2Ω)
FTV PIN A (SIGNAL) TO PIN B
(PWR)
To Next Page
Loading...