TM 9-2320-363-20-1
Section 4
TROUBLESHOOTING CHARTS
FLASH CODE:
63
DDR DISPLAY:
PWM DRIVER #3 OPEN CIRCUIT
SAE J1587 CODE:
SID: 059 FMI: 4
Indicates that the PWM DRIVER #3 circuit output is open or is shorted to ground. This diagnostic condition is
detected when the PWM Driver #3 function is OFF and the DDEC III ECM measures a low voltage on the circuit
output.
FLASH CODE:
63
DDR DISPLAY:
PWM DRIVER #4 SHORT TO BATTERY (+)
SAE J1587 CODE:
SID: 060 FMI: 3
Indicates that the PWM DRIVER #4 circuit output is shorted to battery (+). This diagnostic condition is detected
when the DDEC III ECM is unsuccessful in turning ON the circuit function.
NOTE:
The DDEC III ECM supplies a switched ground to the PWM DRIVER #4 circuit to
turn ON the circuit assigned.
FLASH CODE:
63
DDR DISPLAY:
PWM DRIVER #4 OPEN CIRCUIT
SAE J1587 CODE:
SID: 060 FMI: 4
Indicates that the PWM DRIVER #4 circuit output is open or is shorted to ground. This diagnostic condition is
detected when the PWM Driver #4 function is OFF and the DDEC III ECM measures a low voltage on the circuit
output.
FLASH CODE:
64
DDR DISPLAY:
TURBO SPEED SENSOR INPUT FAILURE
SAE J1587 CODE:
PID: 103 FMI: 8
Indicates that the DDEC III Auxiliary Timed input port has not received an expected frequency signal from the Turbo
Speed Sensor.
FLASH CODE:
67
DDR DISPLAY:
COOLANT PRESS SENSOR INPUT VOLTAGE HIGH
SAE J1587 CODE:
PID: 109 FMI: 3
Indicates that the Coolant Pressure Sensor 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:
67
DDR DISPLAY:
COOLANT PRESS SENSOR INPUT VOLTAGE LOW
SAE J1587 CODE:
PID: 109 FMI: 4
Indicates that the Coolant Pressure Sensor 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 the sensor return circuit or to ground
(4)
sensor +5 volt supply is shorted to sensor return circuit
Change 3 3-345.33
