New Holland 19740: ECM/PCM Power Relay Control Circuit Open - Main Relay Short Circuit

The fault code indicates an open circuit in the ECM/PCM Power Relay Control Circuit, or a short circuit in the Main Relay. This may prevent the relay from functioning properly, affecting the power supply to the engine control module.

1. 1

   The ECM/PCM Power Relay Control Circuit for continuity and proper connection

2. 2

   The Main Relay for signs of short circuit or damage

3. 3

   Wiring and connections related to the ECM/PCM Power Relay and Main Relay

1. 1

   Inspect

   Inspect the ECM/PCM Power Relay Control Circuit for any visible damage, breaks, or poor connections.

2. 2

   Test

   Test the Main Relay for signs of short circuit using a multimeter or diagnostic tool.

3. 3

   Check

   Check all wiring and connections related to the ECM/PCM Power Relay and Main Relay for integrity and proper seating.