Ignition system components, removing and installing

1 - O-ring

• Always replace

2 - Camshaft Position (CMP) sensor G40

• Checking → Camshaft Position (CMP) sensor G40 , checking 
• Installation location → Component locations, overview  , engine compartment overview
• Sensor and harness connector contacts are gold-plated

3 - 10 Nm

4 - Harness connector

• Black, 3-pin
• Camshaft Position (CMP) sensor G40
• Sensor and harness connector contacts are gold-plated

5 - Cable guide

6 - Harness connector

• 5-pin
• For Ignition coil N152

7 - Ignition coil N152

• With ignition cable identification; do not interchange
• Checking → Ignition coils with power output stage, checking 
• Installation location → Component locations, overview  , engine compartment overview

8 - Cover

• Removing and installing: → 13 - ENGINE - CRANKSHAFT, CYLINDER BLOCK

9 - Harness connector

• Brown, 3-pin
• For Knock Sensor 2 G66
• Sensor and connector contacts are gold-plated

10 - 20 Nm

• Tightening torque influences function of knock sensor

11 - Knock Sensor (KS) 2 G66

• Sensor and connector contacts are gold-plated
• Located on intake side of cylinder block
• Checking → Knock sensors, checking 

12 - Sender wheel

• For Camshaft Position (CMP) sensor G40
• Contact surface of timing chain and sensor wheel must be dry when installing
• If sensor wheel has been removed, after installing check timing: → 13 - ENGINE - CRANKSHAFT, CYLINDER BLOCK

13 - Camshaft chain sprocket

14 - Camshaft roller chain

15 - Knock Sensor (KS) 1 G61

• Sensor and harness connector contacts are gold-plated
• Located on exhaust side of cylinder block
• Checking → Knock sensors, checking 

16 - Harness connector

• White, 3-pin
• For Knock Sensor (KS) 1 G61
• Sensor and harness connector contacts are gold-plated

17 - 100 Nm

• Oil bolt head contact surface when installing
• To remove and install, counter-hold using 24 mm spanner on camshaft

18 - Spark plug

• 25 Nm
• Remove and install using 3122B spark plug spanner
• Type and electrode gap → Technical data, spark plugs  , test data, spark plugs

19 - Spark plug connector with ignition cable and suppressor

• 4-6 kΩ
• Only remove and install spark plug connector using tool T10029