|
|
TM 9-2320-364-20-1
2-11. TROUBLESHOOTING INSTRUCTIONS (CONT).
(d)
Diagnosis is built on codes that are displayed on the Diagnostic Data Reader (DDR) (Table 2-12).
Since the self-diagnostics do not detect all possible faults, the absence of a code does not mean
there are no problems in the system. If a DDEC problem is suspected (even in the absence of a
code), go to the DDEC II Troubleshooting (All Conditions) flowchart, (Para 2-13) or DDEC III/IV
Troubleshooting (All Conditions) flow chart Para 2-14. This chart can lead you to other charts
which can aid in the troubleshooting process.
(e)
If, after DDEC II or DDEC III/IV troubleshooting is completed and other symptoms remain, go to
Engine Troubleshooting.
(2)
Using the Diagnostic Data Reader (DDR).
(a)
Plug reader into truck connector and turn ENGINE switch ON.
Affected
Code
Sensor
Number
Description
11
Vernier Control
System on for 2 seconds with too low a voltage at the Vernier
Control input to the DDEC ECM.
12
Vernier Control
System on for 2 seconds with too high a voltage at the
Vernier Control input to the DDEC ECM.
14
Oil Temperature (OTS)
Engine running for 8 minutes with too high a voltage at the
OTS input to the DDEC ECM.
15
Oil Temperature (OTS)
Engine running for 2 seconds with too low a voltage at the
OTS input to the DDEC ECM.
21
Throttle Position (TPS)
System running for 2 seconds with too high a voltage at the
TPS input to the DDEC ECM.
22
Throttle Position (TPS)
System running for 2 seconds with too low a voltage at the
TPS input to the DDEC ECM.
23
Fuel Temperature (FTS)
Engine running for 8 minutes with too high a voltage at the
FTS input to the DDEC ECM.
24
Fuel Temperature (FTS)
Engine running for 2 seconds with too low a voltage at the
FTS input to the DDEC ECM.
25
NO CODES - No faults have been detected by DDEC since
the last time the codes were cleared.
32
ECM FAILURE - The backup system inside the DDEC ECM
has failed.
33
Turbo Boost (TBS)
Engine running (at less than 800 RPM or less than 30% of
maximum torque) for 5 seconds with too high a voltage at
the TBS input to the DDEC ECM.
34
Turbo Boost (TBS)
Engine running for 2 seconds with too low a voltage at the
TBS input to the DDEC ECM.
35
Oil Pressure (OPS)
Engine running for 2 seconds at less than 800 RPM with too
high a voltage at the OPS input to the DDEC ECM. Oil
temperature must be greater than 60 degrees C to log this
code.
36
Oil Pressure (OPS)
Engine running for 2 seconds with too low a voltage at the
OPS input to the DDEC ECM.
2-100
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |