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TM 9-2320-360-20-3
Section 4
TROUBLESHOOTING CHARTS
FLASH CODE:
62
DDR DISPLAY
(AUXILIARY OUTPUT #1) OPEN CIRCUIT
SAE J1587 CODE:
SID: 026 FMI: 4
Indicates that the function (engine brake) assigned to the Auxiliary Output #1 circuit output is open or is shorted
to ground. This diagnostic condition is detected when the Auxiliary Output #1 function is OFF and the DDEC III
ECM measures a low voltage on the circuit output.
NOTE: The DDR will display the parameter text description in TABLE 2 (ECM Output Options) to identify the
function assigned to AUXILIARY OUTPUT #1.
FLASH CODE:
63
DDR DISPLAY
PWM DRIVER #1 SHORT TO BATTERY (+)
SAE J1587 CODE:
SID: 057 FMI: 3
Indicates that the PWM DRIVER #1 circuit (transmission modulator) output is shorted to battery (+). This diagnos-
tic condition is detected when the DDEC III ECM is unsuccessful in turning ON the circuit function.
NOTE: The DDEC Ill ECM supplies a switched ground to the PWM DRIVER #1 circuit to turn ON the circuit
function.
FLASH CODE:
63
DDR DISPLAY
PWM DRIVER #1 OPEN CIRCUIT
SAE J1587 CODE:
SID: 057 FMI: 4
Indicates that the PWM DRIVER #1 circuit (transmission modulator) output is open or is shorted to ground, This
diagnostic condition is detected when the PWM Driver #1 function is OFF and the DDEC Ill ECM measures a low
voltage on the circuit output.
FLASH CODE:
71
DDR DISPLAY
XXX INJECTOR RESPONSE TIME SHORT
SAE J1587 CODE:
SID: XX FMI: 1
Indicates that the time it takes from when the DDEC III ECM requests an injector be turned on to when the injec-
tor solenoid valve actually closes is shorter than the lower limit of the expected range. This diagnostic condition
is typically:
(1)
aerated fuel system
(2)
high system battery (+) supply voltage
(3)
failed solenoid valve
NOTE: The injector diagnostic SID (Subsystem IDentifier) indicates which cylinder number has an injector with a
short response time. The injector number describes the cylinder and/or bank which has the injector with
a short response time. The troubleshooting chart for this flash code is covered in TM 9-2320-360-34-1,
Injector response times generally increase with low battery supply voltage and decrease with high battery
supply voltage. Although injector response times vary from injector to injector at a given RPM, each indi-
vidual injector response time should remain relatively consistent from one firing to the next. Wide varia-
tions in response time (typically +/- 0.2 msec) for one injector at a steady engine RPM may indicate an
electrical problem (faulty alternator or voltage regulator, poor or broken ground cables, etc.).
H-22
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