DDEC VI SERIES 60 TROUBLESHOOTING GUIDE
38.1 SPN 2629/FMI 3
This condition is typically open circuit.
38.1.1
Open Circuit Check
Check as follows:
1. Check for multiple codes.
[a] If codes 1636/3, 412/3 and 2629/3 are active at the same time, repair the open circuit
between pin 52 of the 120–pin MCM Connector and pin 1 of the EGR, IMT, and
TCO temperature sensors. Refer to section 38.1.1.1.
[b] If only fault 2629/3 is active, go to step 2.
2. Disconnect the TCO Sensor.
3. Measure the resistance across pins 1 and 2 of the TCO Sensor.
[a] If the resistance is greater than 500k
Ω
, replace the TCO Sensor. Refer to section
38.1.1.1
[b] If the resistance is less than 300k
Ω
, go to step 4.
4. Turn the ignition ON (key On, engine OFF).
5. Measure the voltage between pins 1 and 2 of the TCO Sensor harness connector.
[a] If the voltage is between 2.75 and 3.25 volts, go to step 7.
[b] If the voltage is less than 2.75 volts, go to step 6.
6. Measure the voltage between pin 2 of the TCO Sensor harness connector and ground.
[a] If the voltage is between 2.75 and 3.25 volts, repair the open circuit between pin 1
of the TCO Sensor harness connector and pin 52 of the 120–pin MCM connector.
See Figure 38-1. Refer to section 38.1.1.1.
Figure 38-1
Turbo Compressor Outlet Temperature Sensor
All information subject to change without notice.
PRELIMINARY 6SE567 0512
Copyright © 2005 DETROIT DIESEL CORPORATION
38-3
Summary of Contents for Series 60 DDEC VI
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Page 89: ...4 SPN 84 VEHICLE SPEED SENSOR Section Page 4 1 SPN 84 FMI 3 4 3 4 2 SPN 84 FMI 4 4 4 ...
Page 93: ...5 SPN 86 ADAPTIVE CRUISE CONTROL FAULT Section Page 5 1 SPN 86 FMI 14 5 3 ...
Page 201: ...21 SPN 625 CAN FAULT Section Page 21 1 SPN 625 FMI 2 9 10 13 14 21 3 21 2 SPN 625 FMI 4 21 5 ...