MBE 4000 DDEC VI Troubleshooting – Section 92.1 SPN 1636/FMI 2

Section 92.1
SPN 1636/FMI 2

This diagnostic condition is typically erratic data.‪

Section 92.1.1
Erratic Data Source Check

Check for the source of erratic data as follows:‪

1. Disconnect the Intake Air Temperature Sensor.
2. Inspect the harness connector for corroded, damaged, bent spread pins.
   1. If corroded, damaged, bent spread pins are found, repair as necessary.
   2. If no pin damage is found, replace the Intake Air Temperature Sensor.

Section 92.1.1.1
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.
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. If assistance is required, call the Detroit Diesel Customer Support Center at 313–592–5800.