Engine Control Module Replacement; Heated Exhaust Gas Oxygen Sensor Replacement - JLG 400S Service And Maintenance Manual

SECTION 3 - CHASSIS & TURNTABLE

Engine Control Module Replacement

REMOVAL
1. Disconnect negative battery cable.
2. Remove controller from mounting bracket.
3. Push connector lock back to unlock connector.
4. Unplug controller and remove.
INSTALLATION
THE CONTROLLER IS CALIBRATED FOR EACH ENGINE VERIFY YOU HAVE THE
CORRECT CONTROLLER
1. Plug connector into controller.
2. Push lock into place.
3. Mount controller into mounting bracket.
4. Reconnect the battery cable.
5. Start engine.
6. Check for any DTC codes and clear.
7. Verify engine is in closed loop and no warning lights are
illuminated.
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Heated Exhaust Gas Oxygen Sensor Replacement

REMOVAL
1. Disconnect negative battery cable.
2. Disconnect the O2 sensor electrical connector.
3. Using an O2 sensor socket, remove the O2 sensor and
discard.
INSTALLATION
BEFORE INSTALL THE O2 SENSOR LUBRICATE THREADS WITH ANTI-SEIZE
COMPOUND GM P/N 5613695 OR EQUIVALENT. AVOID GETTING COMPOUND
ON THE SENSOR TIP.
1. Install O2 sensor. Tighten to 30 ft. lbs. (41 Nm).
2. Start engine.
3. Check for any DTC codes and clear.
4. Verify engine is in closed loop and no warning lights are
illuminated.
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