New Holland ENG 3262 – ENGINE: Starter Relay: Low Side Power - Short Circuit to Ground

The engine control unit has detected a short to ground condition on the low side control circuit that operates the starter relay.

• Machines equipped with F5C and F5H (DOC) engines
• Skid Steer Loaders (L220, SR175)
• Compact Wheel Loaders (W50C, W60C, W70C, W80C)

1. 1

   Inspect the ECM, the starter, and the starter relay connections to ensure all connections are secure, tight, and free of corrosion, abrasion, or damage.

2. 2

   Inspect the wiring harness running from the ECM to the starter and the starter relay. Verify that the harness is free of damage, corrosion, abrasion, and incorrect attachment.

3. 3

   Check the ECU output stage (Low Side Driver) for an open or short circuit to ground.

1. 1

   Disconnect battery power

   Disconnect battery power before servicing the electrical system.

2. 2

   Repair or replace wiring

   Based on the visual and multimeter inspection of the wiring harness, repair or replace any damaged wires or connectors between the Engine Controller and the starter relay.

3. 3

   Replace starter relay

   If the wiring and connectors are intact but the short to ground remains present when the relay is engaged, replace the starter relay.

4. 4

   Clear fault codes

   Clear the fault codes using a diagnostic tool or DTC eraser.

5. 5

   Reload dataset or replace controller

   If the fault persists after verifying the harness and replacing the relay, official service instructions state to 'Reload Engine Dataset Or Replace Engine Controller'.