Ignition system components, removing and installing
NOTE:
Engine Control Module (ECM) with connectors. See item 8 in FUEL INJECTION SYSTEM COMPONENTS, REMOVING AND INSTALLING
.
NOTE:
The following list refers to Fig 1.
- Connector
- Black, 4-pin
- Mark connector and component before pulling connector off.
- Ignition coil with power output stages (-N70-, -N127-, -N291-, -N292-, -N323- and -N324-)
- Remove using puller T10095
- Checking. See IGNITION COIL WITH POWER OUTPUT STAGE, CHECKING .
- Control housing
- For camshaft timing adjustment
- Removing and installing:
- Bracket
- For Knock sensor (KS) 1 -G61- connection
- Component location: on right of cylinder head
- 10 Nm
- 3-pin connector
- Black
- Gold plated terminals
- Knock Sensor (KS) 1 -G61-*
- Component location: between cyl. 1 and cyl. 3
- Terminal surfaces between knock sensor and cylinder block must be free of corrosion, dirt and grease.
- Checking. See KNOCK SENSOR, CHECKING .
- 20 Nm
- Torque setting influences function of knock sensor
- Exhaust camshaft timing adjuster
- Marking: 32A
- Turn engine over only when camshaft timing adjuster is installed
- With sensor wheel for Camshaft Position (CMP) Sensor 2 -G163-
- If camshaft timing adjuster has been removed, after installing check timing:
- Check camshaft timing adjustment:
- 60 Nm plus additional 90° turn
- Replace
- Terminal surface of sensor wheel on bolt head must be dry for assembly
- To remove and install, use a 32 mm open jaw wrench on camshaft as a counter-hold:
- Cover
- Removing and installing:
- Seal
- Replace
- Camshaft Position (CMP) Sensor 2 -G163-*
- For exhaust camshaft
- Sensor and connector terminals are gold plated
- Checking. See CAMSHAFT POSITION (CMP) SENSOR, CHECKING .
- 10 Nm
- Connector
- Black, 3-pin
- Sensor and connector terminals are gold plated
- Mark connector and component before pulling connector off.
- Camshaft Position (CMP) Sensor -G40-*
- For intake camshaft
- Sensor and connector terminals are gold plated
- Checking. See CAMSHAFT POSITION (CMP) SENSOR, CHECKING .
- Knock Sensor (KS) 2 -G66-*
- Component location: Between cyl. 4 and cyl. 6
- Terminal surfaces between knock sensor and cylinder block must be free of corrosion, dirt and grease.
- Sensor and connector terminals are gold plated
- Checking. See KNOCK SENSOR, CHECKING .
- Connector
- Black, 2-pin
- Sensor and connector terminals are gold plated
- Camshaft roller chain
- Mark direction of rotation before removing (installation position)
- Installing:
- Intake camshaft adjuster
- Marking: 24E
- Turn engine over only when camshaft timing adjuster is installed
- With sensor wheel for Camshaft Position (CMP) Sensor 2 -G163-
- If camshaft timing adjuster has been removed, after installing check timing:
- Check camshaft timing adjustment:
- Camshaft Adjustment Valve 1 (exhaust) -N318-*/**
- For exhaust camshaft
- Mark connector and component before pulling connector off.
- Check camshaft timing adjustment:
- Valve -1- for camshaft adjustment - N205-*/**
- For intake camshaft
- Mark connector and component before pulling connector off.
- Check camshaft timing adjustment:
- Spark plug, 25 Nm
- Remove and install with spark plug wrench 3122 B
- Type and electrode gap. See TEST DATA, SPARK PLUGS .