Troubleshooting guide

SERIES 60 EGR TECHNICIAN'S GUIDE

LOGIC CODES (MECHANICAL FAILURES)

Logic codes indicate the detection of mechanical failures by the DDEC V system. The response

will be a Flash Code.

Diagnosing Flash Code 13

Failure Mode: SID 146, FMI 6

Indicates: EGR Valve Current is too high.

Response: Perform the following steps if the EGR Valve current is too high.

1. Check for a short circuit.

2. Disconnect the harness connector from the actuator control valve coil.

3. Measure the coil resistance between pins A and B.Table 9-2 and see Figure 9-1.

[a] If the coil resistance is to low replace the actuator assembly.

[b] If the coil resistance is okay, go to step 4.

4. Disconnect engine harne ss at ECU and at coil and measure resistance across the two

pin connector pins.

[a] Ifresistanceislessthan100

, the two wires are shorted to each other.

[b] If the resistance is greater than 100

, try a test ECU or contact Detroit Diesel

Technical Service.

Figure 9-1 EGR Valve Coil Wiring

All information subject to change without notice. (Rev. April 2004) 9-9