DD15 SPN 3510/FMI 2 Troubleshooting

SPN 3510/FMI 2

This fault indicates that the throttle pedal supply is receiving erratic data.‪

Check as follows:‪

1. Disconnect the Accelerator Pedal (AP).
2. Turn the ignition ON.
3. Measure the voltage between pins 1 and 3 of the AP harness connector.
   1. If the voltage is between 4.5 and 5.5 volts, go to step 5 .
   2. If the voltage is less than 4.5, go to step 4 .
4. Measure the voltage between pins 1 of the AP harness connector and ground.
   1. If the voltage is between 4.5 and 5.5 volts, repair the open circuit between pin 3 of the AP harness connector and pin 4 of the CPC #1 connector. Refer to “112.1.1 Verify Repairs” .
   2. If the voltage is less than 4.5, repair the open circuit between pin 1 of the AP harness connector and pin 8 of the CPC #1 connector. Refer to “112.1.1 Verify Repairs” .
5. Turn the ignition OFF.
6. Disconnect the CPC #1 connector.
7. Measure the resistance between pin 2 of the AP harness connector and pin 7 of the CPC #1 connector.
   1. If the resistance is greater than 3 Ω, repair the open between pin 2 of the AP harness connector and pin 7 of the CPC #1 connector. Refer to “112.1.1 Verify Repairs” .
   2. If the resistance is less than 3 Ω, replace the Accelerator Pedal. Refer to “112.1.1 Verify Repairs” .

Verify Repairs

Verify repairs as follows:‪

1. Turn ignition OFF.
2. Reconnect any electrical connections that were disconnected to perform the diagnosis.
3. Clear codes with DDDL 7.0 or latest version.
   

   ENGINE EXHAUST ‪
   To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area. Engine exhaust is toxic.‪

4. Start and bring engine up to operating temperature (over 140°F/60°C).
5. Verify operation is satisfactory and no warning lamps illuminate. If warning lamps illuminate, troubleshoot the codes.