Yale 524195-3 – VSM (Vehicle System Manager): Yanmar Cold Start Relay Driver Output OORH (Out Of Range High)

This code indicates that the output driver circuit for the cold start (glow plug) relay is experiencing a high voltage condition or an open circuit. The system has detected that the voltage is 'Out of Range High.'

• Yale and Hyster Forklifts
• Yale and Hyster forklifts (2005 and newer models)
• Yale VX series
• GC050VX
• GC135VX

1. 1

   Perform an operational reset check by turning the truck power OFF for at least 30 seconds, then back ON to see if the DTC reoccurs.

2. 2

   Measure the resistance of the device driver wire between the cold start relay connector and the VSM connector (should be less than 0.5 ohms).

3. 3

   Inspect the wiring harness between the relay and the VSM for any shorts to battery voltage.

4. 4

   Test the cold start relay coil for internal failure, such as internal shorts or an open coil.

1. 1

   Repair Wiring

   If the DMM tests reveal an open circuit (resistance > 0.5 ohms) or a short to battery voltage in the harness between the VSM and the relay, repair or replace the affected wiring harness section.

2. 2

   Replace the Relay

   If the wiring harness tests good but the relay coil is found to be defective (e.g., internal short causing a controller overload or an open coil), replace the cold start relay.

3. 3

   Replace the Controller

   If the wiring is intact and the relay is functioning correctly, the fault is a functional failure within the VSM's output driver circuitry. You will need to replace and program a new Vehicle System Manager (VSM).