Ignition System: Service and Repair

NOTES:
- Self-diagnosis, Output check diagnosis and electrical checking of the CIS-E Motronic injection and ignition system - Repair Group D2
- Only the ignition portion of the CIS-E Motronic system is covered in Repair Group 28. Fuel injection components such as pressure regulator, cold start valve, idle stabilizer valve, etc. are handled in Repair Group 25.
- Observe Safety Precautions

1-Harness connector

2-Throttle body
- with idle* and full throttle switch*

3- Harness connector
- for A/C
- in right side of plenum

4- 10 Nm(7 ft lb)

5-CIS-E Motronic control unit harness connector

CAUTION: ONLY disconnect or connect with ignition switched OFF!

- to disconnect/release holding spring on CIS-E Motronic control unit

6- CIS-E Motronic control unit (J 204)*
- controls fuel injection, Oxygen sensor control,ignition map, knock regulation and Output check diagnosis
- with Fault memory

7- Control unit mounting plate

8- Single pin connector

9- ignition coil power output stage (N 70)

10- Ignition coil
- primary resistance: 0.6 to 0.8 Ohms (between terminals 1 and 15)
- secondary resistance: 6500 to 8500 Ohms (between terminals 15 and 4)

11- Protective cap

12-Interference suppression connector
- 600 to 1400 Ohms

13- Ignition Wire
- check for continuity

14- ignition timing sender (G 4)*
- mounted on cylinder number 4 ignition wire
- installed position: tabs must point toward ignition distributor

15- Interference suppression cap

16- Harness connector
- Ignition timing sensor (G 4)*
- mounted on idle stabilizer valve bracket

17- Distributor cap
-check for cracks, traces of leakage current
- check for wear on terminals
- clean before installing
- check carbon brushes for wear, damage and freedom of movement

18- Harness connector
- for knock sensor II (G 66)*
- mounted on ground strap bracket (item 3)

19- Ignition distributor rotor
- Identification: R1
- 600 to 1400 Ohms

20- Harness connector
- for knock sensor I (G 61)*
- mounted below the oil cooler

21- Knock sensor II (G 66)*

22- 15 to 20 Nm (11 to 15 ft lb)
tightening torque influences knock sensor function

23- Dust cap

24- Ignition distributor

25- Knock sensor I (G 61)*

26- Spark plug(s)
- 25 Nm (18 ft lb)
- remove and install using 3122A
- requires top nut,

27- Spark plug connector
- 4000 to 6000 Ohms

28- Removal clip

29- O-ring
- replace If damaged

30- Wiring guide
- for ignition wires
- mounted to intake manifold using brackets

31- Angle bracket
- for ignition coil and CIS-E Motronic control unit (J 204) * ground straps
- mounted between ignition distributor and cylinder head

checked using self-diagnosis







Note: The rotor is glued to the shaft. if the rotor has to be replaced, remove it by destroying it with a pair of pliers.

Carefully remove any adhesive residue from the shaft and glue on the new rotor using adhesive AMV 185 100 01 or equivalent.

1- ignition distributor shaft
pull out after removing pin 7

2- Shim(s)

3- Plastic washer

4- Screw

5- Hall sender

6- ignition distributor housing

7- Pin

8- Locking spring

9- Clutch
before removing, mark position to shaft 1 (driver displacement)

NOTE: During assembly, make sure that the clutch moves easily on the pin and that the play between the clutch and shaft is not restricted.