JLG 680S Service Manual - Manual (Page 179)

SECTION 3 - CHASSIS & TURNTABLE
3121234 – JLG Lift – 3-131
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.
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 lb-ft (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.