Ignition System: Service and Repair

Ignition System Components, Removing And Installing







NOTE: Engine Control Module (ECM) with connectors, item 8.

1 - Connector
- Black, 4-pin
- Mark connector and component before pulling connector off.
2 - Ignition coil with power output stages (- N70-, -N127-, -N291-, -N292-, -N323- and - N324-)
- Remove using puller T10095
3 - Control housing
- For camshaft timing adjustment
4 - Bracket
- For Knock sensor (KS) 1 -G61- connection
- Component location: on right of cylinder head
5 - 10 Nm
6 - 3-pin connector
- Black
- Gold plated terminals
7 - Knock sensor (KS) 1 -G61-*
- Component location: between cyl. 1 and cyl. 3
- The terminal surfaces between Knock sensor (KS) and cylinder block must be free of corrosion, dirt and grease.
8 - 20 Nm
- Torque setting influences the function of the Knock sensor (KS)
9 - 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 the camshaft timing adjuster has been removed, after installing check timing:
- Check camshaft timing adjustment:
10 - 60 Nm plus additional 90 degree 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:
11 - Cover
12 - Seal
13 - Camshaft Position (CMP) Sensor 2 -G163- *
- For exhaust camshaft
- Sensor and connector terminals are gold plated
14 - 10 Nm
15 - Connector
- Black, 3-pin
- Sensor and connector terminals are gold plated
- Mark connector and component before pulling connector off.
16 - Camshaft Position (CMP) Sensor -G40-*
- For inlet camshaft
- Sensor and connector terminals are gold plated
17 - Knock sensor (KS) 2 -G66-*
- Component location: Between cyl. 4 and cyl. 6
- The terminal surfaces between Knock sensor (KS) and cylinder block must be free of corrosion, dirt and grease.
- Sensor and connector terminals are gold plated
18 - Connector
- Black, 2-pin
- Sensor and connector terminals are gold plated
19 - Camshaft roller chain
- Mark direction of rotation before removing (installation position)
20 - Inlet 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 the camshaft timing adjuster has been removed, after installing check timing:
- Check camshaft timing adjustment:
21 - Camshaft Adjustment Valve 1 (exhaust) - N318-*/**
- For exhaust camshaft
- Mark connector and component before pulling connector off.
- Check camshaft timing adjustment:
22 - Valve -1- for camshaft adjustment -N205- */**
- For inlet camshaft
- Mark connector and component before pulling connector off.
- Check camshaft timing adjustment:
23 - Spark plug, 25 Nm
- Remove and install with spark plug wrench 3122B
- Type and electrode gap