TM 9-2320-363-20-1
Section 4
TROUBLESHOOTING CHARTS
FLASH CODE:
68
DDR DISPLAY:
TPS IDLE VALIDATION SWITCH OPEN CIRCUIT
SAE J1587 CODE:
PID: 230 FMI: 5
Indicates that the Throttle Position Sensor (TPS) Idle Validation Switch (IVS) input to the ECM is NOT grounded
when the TPS input demand is less than 11.8% (120 counts).
FLASH CODE:
68
DDR DISPLAY:
TPS IDLE VALIDATION SWITCH GROUNDED CIRCUIT
SAE J1587 CODE:
PID: 230 FMI: 6
Indicates that the Throttle Position Sensor (TPS) Idle Validation Switch (IVS) input to the ECM IS grounded when the
TPS input demand is greater than 27.5% (282 counts).
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 IIIl ECM requests an Injector be turned on to when the injector
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 DDR
will display the injector text description in the table DDEC Ill Injector Numbering on
page 3-345.344.
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 individual injector response time
should remain relatively consistent from one firing to the next. Wide variations 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.).
FLASH CODE:
72
DDR DISPLAY:
VEHICLE OVERSPEED
SAE J1587 CODE:
PID: 084 FMI: 0
Indicates that the vehicle (WITH fueling to the engine) has exceeded the vehicle speed limit that is defined in the
ECM calibration.
FLASH CODE:
72
DDR DISPLAY:
VEHICLE OVERSPEED (ABSOLUTE)
SAE J1587 CODE:
PID: 084 FMI: 11
Indicates that the vehicle (WITHOUT fueling to the engine) has exceeded a secondary vehicle speed limit that is
defined in the ECM calibration.
3-345.34 Change 3
