John Deere 002360.03 – BLC/CLC: Voltage Detected on Rear Mud Guard Corner Work Light Pin When Lights Are Off

The vehicle body controller (BLC or CLC) has detected voltage on the rear mudguard work light circuit while the light is switched off. The .03 suffix indicates the voltage is above normal or shorted to a high source. This condition is caused by an unintended electrical connection, resulting in power from another circuit back-feeding into the rear work light's wiring harness.

• 6110M
• 6120M
• 6130M
• 6145M
• 6155M
• 6175M
• 6195M
• 6R Series
• 7R Series
• 8R Series

1. 1

   Visually inspect the wiring harness leading to the rear mudguard work lights for chafing, melting, pinched wires, or rodent damage. Pay close attention to where the harness passes through the chassis or is secured by clips.

2. 2

   Disconnect and inspect the electrical connectors at the rear work light and the BLC/CLC module for corrosion (green or white powder), moisture, or pushed-out/damaged pins.

3. 3

   Isolate the fault by disconnecting the work light and controller, then use a multimeter to check for DC voltage on the rear work light pin in the harness-side connector to confirm the backfeed is in the loom.

4. 4

   Test for a short to power by disconnecting the battery and checking for continuity between the work light power wire and other power wires in the loom.

5. 5

   Perform a voltage drop test by comparing battery voltage to the voltage at the light's connector when commanded on (a difference greater than 0.5V indicates high resistance).

1. 1

   Ensure safety

   Disconnect the battery before performing any wiring repairs to prevent short circuits or injury.

2. 2

   Isolate damaged harness section

   Pinpoint the location of the voltage backfeed, which is often found where harnesses are bent, pass through tight spaces, or run close to another harness.

3. 3

   Repair or replace wiring

   If insulation is damaged between wires, separate them, clean the copper, splice, and seal with heat shrink tubing. If severely damaged, replace that section of the harness.

4. 4

   Repair or replace connectors

   Use a pin extraction tool to remove corroded or damaged pins. Crimp new pins onto the wires and insert them into the housing. Replace the housing if it is damaged.

5. 5

   Verify the repair

   Reconnect the battery and connectors. Turn the key on (engine off) and use a multimeter to confirm no voltage is present on the rear work light pin when the switch is off. Ensure the fault code clears.

6. 6

   Final assembly

   Secure the wiring harness away from sharp edges, moving parts, and heat sources using zip ties or factory clips.