G420E/G424E Tier LP Engine Advanced Diagnostics 49
Table a. MI-04 Diagnostic Fault Codes (Flash Codes)
DFC Probable Fault Action Corrective Action, First Check
23 ThrottleSensorInputHi
TPS1 sensor failure or shorted circuit
Disable Throttle Check throttle connector and TPS1
sensor wiring for a shorted circuit
ETC PIN 6 to SECM PIN 17
(SIGNAL)
ETC PIN 2 to SECM PIN 1 (GND)
24 ThrottleSensorRangeLo
TPS1 potentiometer malfunction.
Improper TPS reading may be due to
dirt or oxidation on the sensor traces.
Stored Fault Code
(MIL Only)
Check the throttle connector and pins
for corrosion.
Perform Throttle test with the Service
Tool several times to clean sensor
To check the TPS disconnect the
throttle connector and measure the
resistance (1.25KΩ +/-30%) from
TPS PIN 2 (GND) to
PIN 6 (TPS1 SIGNAL)
TPS PIN 3 (PWR) to PIN 6 (TPS1
SIGNAL)
*See Chapter 6.0 for sensor checks
25 ThrottleSensorRangeHi
TPS1 potentiometer malfunction.
Improper TPS reading may be due to
dirt or oxidation on the sensor traces.
Stored Fault Code
(MIL Only)
Check the throttle connector and pins
for corrosion.
z Perform Throttle test with the
Service Tool several times to
clean sensor
To check the TPS disconnect the
throttle connector and measure the
resistance (1.25KΩ +/-30%) from
TPS PIN 2 (GND) to PIN 6 (TPS1
SIGNAL)
TPS PIN 3 (PWR) to PIN 6 (TPS1
SIGNAL)
*See Chapter 6.0 for sensor checks
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