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TM9-2320-360-20-3
Section 4
TROUBLESHOOTING CHARTS
FLASH CODE:
DDR DISPLAY
SAE J1587 CODE:
16
COOLANT LEVEL SENSOR INPUT VOLTAGE HIGH
PID: 111 FMI: 3
Indicates that the Coolant Level Sensor (CLS) input to the ECM has exceeded 95% (normally > 4.75 volts) of the
sensor supply voltage.
This diagnostic condition is typically:
(1) open sensor signal circuit
(2) open sensor return circuit
(3) sensor signal circuit is shorted to the sensor +5 volt supply
FLASH CODE:
21
DDR DISPLAY
THROTTLE SENSOR INPUT VOLTAGE HIGH
SAE J1587 CODE:
PID: 91 FMI: 3
Indicates that the Throttle Position Sensor (TPS) input to the ECM has exceeded 95% (normally > 4.75 volts) of
the sensor supply voltage.
This diagnostic condition is typically:
(1) open sensor return circuit
(2) sensor signal circuit is shorted to the sensor +5 volt supply
FLASH CODE:
22
DDR DISPLAY
THROTTLE SENSOR INPUT VOLTAGE LOW
SAE J1587 CODE:
PID: 91 FMI: 4
Indicates that the Throttle Position Sensor (TPS) input to the ECM has dropped below 5% (normally < 0.25 volts)
of the sensor supply voltage. This diagnostic condition Is typically:
(1) open sensor signal circuit
(2) open sensor +5 volt supply circuit
(3) sensor signal is shorted to sensor return circuit or to ground
(4) sensor +5 volt supply is shorted to the sensor return circuit or ground
FLASH CODE:
23
DDR DISPLAY
FUEL TEMP SENSOR INPUT VOLTAGE HIGH
SAE J1587 CODE:
PID: 174 FMI: 3
Indicates that the engine Fuel Temperature Sensor (FTS) input to the ECM has exceeded 95% (normally > 4.75
volts) of the sensor supply voltage. NOTE: This code will only be logged during warm engine operation. This
diagnostic condition is typically:
(1) open sensor signal circuit
(2) open sensor return circuit
(3) sensor signal circuit is shorted to the sensor +5 volt supply
FLASH CODE:
24
DDR DISPLAY
FUEL TEMP SENSOR INPUT VOLTAGE LOW
SAE J1587 CODE:
PID: 174 FMI: 4
Indicates that the engine Fuel Temperature Sensor (FTS) input to the ECM has dropped below 5% (normally
< 0.25 volts) of the sensor supply voltage. This diagnostic condition is typically:
(1) sensor signal circuit is shorted to sensor return or to ground
(2) sensor +5 volt supply is shorted to sensor return circuit or to ground
H-17
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