Series 60 DDEC V Troubleshooting

Section 64.3 Troubleshooting Flash Code 65, PID 107/FMI 4

Section 64.3
Troubleshooting Flash Code 65, PID 107/FMI 4

Follow these procedures to troubleshoot code 65 p 107/4 AFRS failed low.‪

Section 64.3.1
Multiple Code Check

Perform the following steps to check for multiple codes.‪

  1. Plug the diagnostic tool.
  2. Turn vehicle ignition switch ON.
  3. Read active codes.
    1. If code p 107/4 and no other codes were logged, refer to "64.3.2 Sensor Check" .
    2. If code p 107/4 was logged and none of the following codes were logged: p 110/3 or 4, p 174/3 or 4, p 175/3 or 4, p 101/3 or 4, p 102/3 or 4, p 73/3 or 4, p 94/3 or 4, p 100/3, refer to "64.3.2 Sensor Check" .
    3. If code 107/4 and any of the following codes were logged: p 110/3 or 4, p 174/3 or 4, p 175/3 or 4, p 101/3 or 4, p 102/3 or 4, p 73/3 or 4, p 94/3 or 4, p 100/3, refer to "79 Engine Harness" .

Section 64.3.2
Sensor Check

Perform the following steps to check the sensor.‪

  1. Turn ignition switch OFF.
  2. Disconnect AFRS connector and install a jumper wire between sockets B and C of the AFRS harness connector. See Figure "VIH Connector to Air Filter Restriction Sensor" .
  3. Turn ignition ON.
  4. Read active codes.
  5. If active codes p 107/3 or 4 were not logged, go to step 6 . If active codes p 107/3 or 4 were logged, proceed with the following:
    1. If active code p 107/4 and any other codes were logged, refer to "64.3.4 Check for +5 Volts" .
    2. If code p 107/3 and any other codes except 107/4 were logged, refer to "64.3.3 Check Air Filter Restriction Sensor and ECM/ECU Connectors" .
  6. Warm up engine until either codes are logged or the engine temperature (COOLANT TEMP or OIL TEMP on DDR) has been greater than 60°C (140°F) for one minute.
    1. If active code p 107/4 and any other codes were logged, refer to "64.3.4 Check for +5 Volts" .
    2. If code p 107/3 and any other codes except 107/4 were logged, refer to "64.3.3 Check Air Filter Restriction Sensor and ECM/ECU Connectors" .
    3. Click to see this graphic in a separate window

      Figure 1. VIH Connector to Air Filter Restriction Sensor

Section 64.3.3
Check Air Filter Restriction Sensor and ECM/ECU Connectors

Perform the following steps to check the AFRS and ECM/ECU connectors.‪

  1. Turn ignition OFF.
  2. Check terminals at the AFRS connectors (both the sensor and harness side) for damage: bent, corroded and unseated pins or sockets. Check terminals at the ECM/ECU harness connector (both ECM/ECU and harness side) for damage: bent, corroded and unseated pins or sockets. Check V-11, V-22 and V-60 terminals and pins at ECM/ECU.
    1. If the terminals and connectors are damaged, repair them and refer to "64.3.9.1 Verify Repairs" .
    2. If the terminals and connectors are not damaged, replace the AFRS and check for codes. If you are still logging p 107/4 reprogram the ECM/ECU.Refer to "64.3.9.1 Verify Repairs" .

Section 64.3.4
Check for +5 Volts

Perform the following steps to check for +5 volts.‪

  1. Turn vehicle ignition OFF.
  2. Remove jumper wire.
  3. Turn ignition ON.
  4. Measure voltage on AFRS harness connector, socket C (red test lead) to socket A (black test lead).
    1. If the voltage measurement is less than 4 volts, refer to "64.3.6 Check for Open +5 Volt Line" .
    2. If the voltage measurement is greater than 6 volts, refer to "64.3.8 Check for Short to Battery +" .
    3. If the voltage measurement is between 4 and 6 volts, refer to "64.3.5 Check for Signal Open" .

Section 64.3.5
Check for Signal Open

Perform the following steps to check for signal open.‪

  1. Turn the ignition OFF.
  2. Disconnect the VIH connector at the ECM/ECU. See Figure "VIH Connector to Air Filter Restriction Sensor" .
  3. Install a jumper wire between sockets A and B of the AFRS harness connector.
  4. Measure resistance between sockets V-22 and V-60 on the engine harness connectors.
    1. If the resistance measurement is less than or equal to 5 Ω, refer to "64.3.9 Check for Short to Ground" .
    2. If the resistance measurement is greater than 5 Ω or open, the signal line (V-22) is open. Repair the open and refer to "64.3.9.1 Verify Repairs" .

Section 64.3.6
Check for Open +5 Volt Line

Perform the following steps to check for open +5 volt line.‪

  1. Turn ignition OFF and disconnect the engine harness connectors at the ECM/ECU.
  2. Install a jumper wire between pins A and C of the AFRS connector.
  3. Measure resistance between sockets V-11 and V-60 on the engine harness connector.
    1. If the resistance measurement is less than or equal to 5 Ω, refer to "64.3.7 Check for Short" .
    2. If the resistance measurement is greater than 5 Ω or open, the engine +5 volt line (V-11) is open. Repair the open and refer to "64.3.9.1 Verify Repairs" .

Section 64.3.7
Check for Short

Perform the following steps to check for a short.‪

  1. Remove jumper wire.
  2. Measure resistance between sockets A and C on the AFRS harness connector. Also measure resistance between socket C and a good ground.
    1. If either resistance measurement is less than or equal to 100 Ω, the engine +5 volt line (V-11) is shorted to the return line (V-60) or battery ground. Repair the short and refer to "64.3.9.1 Verify Repairs" .
    2. If the resistance measurement is greater than 100 Ω or open, replace AFRS and refer to "64.3.9.1 Verify Repairs" .

Section 64.3.8
Check for Short to Battery +

Perform the following steps to check for a short to battery.‪

  1. Remove both fuses to the ECM/ECU.
  2. Disconnect the vehicle harness at the ECM/ECU. See Figure "ECM/ECU VIH Connector" .
  3. Measure resistance between socket V-11 on the vehicle harness connector and socket V-61 and V-65 of the vehicle harness connector and between V-11 and V-15.
    1. If resistance measurement is greater than 100 Ω, or open, replace AFRS. Refer to "64.3.9.1 Verify Repairs" .
    2. If resistance measurement is less than or equal to 100 Ω, a short exists between sockets where less than 100 Ω resistance was read. Repair short and reinsert fuses. Refer to "64.3.9.1 Verify Repairs" .

Section 64.3.9
Check for Short to Ground

Perform the following steps to check for a short to ground.‪

  1. Turn vehicle ignition OFF and remove the jumper wire.
  2. Measure resistance between sockets V-22 and V-60 on the VIH connector. See Figure "ECM/ECU VIH Connector" .
    Click to see this graphic in a separate window

    Figure 2. ECM/ECU VIH Connector

    1. If resistance measurement is greater than 100 Ω, or open, go to step 3 .
    2. If resistance measurement is less than or equal to 100 Ω, the signal line (V-22) and return line (V-60) are shorted together. Repair the short. Refer to "64.3.9.1 Verify Repairs" .
  3. Measure resistance between socket V-22 and a good ground. Also measure resistance between V-22 and V-60.
    1. If both resistance measurements are greater than 100 Ω or open, replace AFRS. Refer to "64.3.9.1 Verify Repairs" .
    2. If either resistance measurement is less than 100 Ω, the signal line (V-22) is shorted to the return line (V-60) or battery ground. Repair short and refer to "64.3.9.1 Verify Repairs" .
Section 64.3.9.1
Verify Repairs

Perform the following steps to verify repairs.‪

  1. Turn ignition switch OFF and reconnect all connectors.
  2. Turn ignition ON and clear codes.
  3. Start and run the engine for one minute.
  4. Stop engine.
  5. Check diagnostic tool for codes.
    1. If no codes are logged, troubleshooting is complete.
    2. If code p 107/4 is not logged, and other codes are logged, refer to "18.3 First Step for Diagnosing a Fault Within the DDEC System" .
    3. If code p 107/4 is logged with or without other codes, review this section from the first step to find the error. Refer to "64.3.1 Multiple Code Check" . If no error is located, refer to "64.3.3 Check Air Filter Restriction Sensor and ECM/ECU Connectors" .


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

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