Detroit Diesel MBE 900 Technician Manual page 60

CODES
3. Check the EGR temperature sensor. See Figure 4-6.
Figure 4-6 EGR Temperature Sensor Pins and 55-Pin Connector Wires
[a] Measure the resistance between pins 1 and 3 on the EGR temperature sensor. If
resistance is less than 3 , replace the EGR temperature sensor. Erase the fault code
memory and verify repairs. Refer to section 4.3.2.6.
[b] Bridge pins 1 and 3 on the EGR temperature sensor connector and check for active
fault codes. If fault code s 146/0 is active, replace the EGR temperature sensor, erase
fault code memory, and verify repairs. Refer to section 4.3.2.6.
[c] If fault code s 146/7 is still active, go to step 4.
4. Check coolant usage.
[a] If coolant usage indicates a leak, perform an EGR Cooler Inspection.
Refer to appendix C, Service Information Letter 04 TS - 38. Clean and replace
parts as indicated by inspection. Erase fault code memory and verify repairs.
Refer to section 4.3.2.6.
[b] If coolant usage is normal and fault code s 146/2 is still active, contact the Detroit
Diesel Customer Support Center at 313-592-5800.
4-18
All information subject to change without notice. (Rev. 5/05)
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