CM2150 Electronic Control System – 019-046   Fault Lamp

The fault code warning lamps let the operator know when a part or a system fault is detected. The amber lamp can have the word WARNING printed on it. The red lamp can have the word STOP printed on it

The fault code lamp circuits consist of the light bulb, lamp signal output, and VDC supply from the keyswitch circuit.

Measure the voltage between each fault lamp and ground.

Turn the keyswitch to the ON position.

Touch the positive (+) multimeter probe to the amber warning lamp signal terminal.

Touch the negative (-) multimeter probe to the chassis ground. Measure the voltage.

Repeat this check for the other terminal of the amber fault lamp. The multimeter must show the battery voltage.

Touch the positive (+) multimeter probe to the red stop lamp signal terminal.

Touch the negative (-) multimeter probe to chassis ground.

Measure the voltage.

Repeat this check for the other terminal of the red fault lamp. The multimeter must show battery voltage.

If battery voltage is not present, there is a problem with the keyswitch line or the lamp has failed. Refer to the OEM troubleshooting and repair manual for repair procedures.

Connect all components after the repair is complete.