Series 60 DDEC V Troubleshooting

Section 26.4 Troubleshooting Flash Code 13, PID 146/FMI 5

Section 26.4
Troubleshooting Flash Code 13, PID 146/FMI 5

Flash Code 16 p146/5 indicates the ECM/ECU has detected too low a current measured from the Exhaust Gas Recirculation (EGR) valve.‪

Perform the following steps if the EGR valve current is low.‪

Section 26.4.1
Check for Power Supply or Open Circuit

Check for a power supply issue or open circuit as follows:‪

  1. Turn ignition ON.
  2. Disconnect harness connector at the actuator control valve coil.
  3. Check electrical power supply. With ignition on, check voltage at pin B to battery ground, it should be battery voltage. See Figure "EGR Valve Coil Wiring" .
    Click to see this graphic in a separate window

    Figure 1. EGR Valve Coil Wiring

    1. If battery voltage was read, refer to "26.4.2 Check Actuator Control Valve Coil Resistance" .
    2. If battery voltage was not read, replace the actuator. After replacement, refer to "26.4.3.1 Verify Repairs" .

Section 26.4.2
Check Actuator Control Valve Coil Resistance

Check the actuator control valve coil resistance as follows:‪

  1. Turn ignition OFF.
  2. Disconnect engine harness connector at the ECM/ECU.
  3. Insert a jumper wire between pins E-51 and E-1. See Figure "EGR Valve Coil Wiring" .
  4. Measure resistance between pins A and B at the EGR valve coil connector.
    1. If resistance is greater than 100 Ω this indicates E-51 or E-1 is open. Repair wire or replace harness and refer to "26.4.3.1 Verify Repairs" .
    2. If resistance is less than 100 Ω, refer to "26.4.3 Resistance at the EGR Valve Coil" .

Section 26.4.3
Resistance at the EGR Valve Coil

Measure resistance at the EGR valve coil as follows:‪

  1. Measure resistance at the EGR valve coil between pins A and B.
  2. Compare the resistance read with values shown in Table "Ranges Allowed (ohms)" .
    1. If the resistance is too high or is open, replace the actuator. Once the actuator is replaced, refer to "26.4.3.1 Verify Repairs" .
    2. If the resistance was within specification, reprogram the ECM/ECU.
    3. Note: Coil varies with temperature. It is 3.8 ohms ± 10% at 22 °C and varies. See Table "Ranges Allowed (ohms)"

Coil Temperature °C

Coil Temperature °F

Allowed Ranges (ohms)

22‪

71‪

3.4 - 4.2‪

50‪

122‪

3.7 - 4.6‪

100‪

212‪

4.4 - 5.4‪

Table 1. Ranges Allowed (ohms)
Section 26.4.3.1
Verify Repairs

Perform the following steps to verify repairs:‪

  1. Turn ignition OFF.
  2. Reconnect all connectors.
  3. Turn ignition ON.
  4. Start and run engine.
  5. Check DDR/DDDL codes.
    1. If no codes are displayed, no further troubleshooting is required.
    2. If any other codes are logged. Refer to "20.18 Exhaust Gas Recirculation System Basic Checks for Series 60 Engines" .
    3. If code 146/5 returns contact the Detroit Diesel Customer Service Center (313–592–5800).


Series 60 DDEC V Troubleshooting Guide - 6SE570
Generated on 10-13-2008

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