General instructions for carrying out work on the ignition system
The engine control unit "J623" is equipped with a self-diagnosis function. A voltage of at least 11.5 V is required to maintain the faultless operation of the electrical components. During some tests, the engine control unit "J623" may recognize and record an error. Therefore, after all tests and repairs have been completed, it is necessary to interrogate the fault memory and delete any error records that may have been stored in it.
- 1 - Connector, black, 4-pin. Unlock with installation tool "T10118"
- 2 - Ignition coil 3 with output stage N₂91-. Ignition coil 1 with output stage "N70". Ignition coil 2 with output stage "N127". Ignition coil 4 with output stage "N₂92"
- 3 - Connector, black, 2-pin, for knock sensor 1-G61-, connector contacts are gold-plated
- 4 - Knock sensor 1 "G61", connector contacts are gold-plated, remove the compressor for dismantling
- 5 - 20 Nm, the tightening torque affects the operation of the knock sensor
- 6 - Connector, black, 3-pin, sensor Xonna-G40-
- 7 - Hall sensor "G4Q"
- B - Sealing ring, replace if damaged
- 9 - 10 Nm
- 10 - Glow plug, 30 Nm. Remove and install using spark plug wrench -3122 B-
- 11 - Laying the wires, fasten to the camshaft housing with a torque of 5 Nm
- 12 - Ground wire, unscrew and screw only with the ignition off
- 13 - 10 Nm, unscrew and screw only with the ignition off
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