Computers and Control Systems: Locations

1- Harness connector for Oxygen sensor (G 39)
- up to 7-90, as shown
- after 8-90, 4-pin harness connector for Oxygen sensor (G-39)* and Oxygen sensor heater (Z 19)
- mounted right engine mount
2- Throttle body.
Types: vehicles with separate idle switch (F 60)* and full throttle switch (F 81)*
vehicles with integrated idle switch (F 60)*, full throttle switch (F 81)*, and throttle potentiometer
3- CIS-E Motronic control unit (J 204)*
4- Intake air temperature sensor (G 72)
5- EGR valve (exhaust gas recirculation)
- California only
- only function: monitoring the EGR system
6- CO tap tube
7- Idle stabilizer valve (N 71)**
8- Ignition coil power output stage (N 70)
9- Ignition coil (N)
10- 6-pin harness connector
11- Ignition distributor
with Hall sender (G 40)*
12- Vacuum amplifier
for EGA system (California)
13- Ignition timing sender (G 4)*
- on cylinder number 4 ignition wire
- installed position tabs must point toward ignition distributor
14- Thermopneumatic valve
- on coolant pipe
- for EGR system (California)
15- Coolant temperature sensor (G 62)*
for CIS-E Motronic system
16- Cold start valve (N 17)**
17- Knock sensor I (G 61)
18- Fuel Injector(s)
19- Knock sensor II (G 66)*
20- Control flap for intake air pre-heating
21- Differential pressure regulator (N 73)**
22- Fuel distributor
23- Carbon canister
24- Air filter
25- Air flow sensor potentiometer (G 19)*
26- Fuel pressure regulator
27- Air flow sensor
28- Solenoid, valve I (N 80)**
Solenoid valve II (N 115)
29- Spark plug(s)
- 25 Nm (18 ft lb)
30- harness connector for idle switch (F 60)* and full throttle switch (F-81)*

* checked using self-diagnosis
** checked using output checks