Emission Control Systems: Locations

Emission Component Location Chart:

1 Air Cleaner

2 Mass Air Flow sensor G70

3 Knock sensor 1 G61

4 Intake hose-with heater element connection N79.
For Positive Crank-case Ventilation system.

5 Throttle Valve Control Module J338-heated by coolant.

6 Camshaft Position sensor G40

7 EGR valve

8 Ignition coil N152-With ignition cable identification.
Do not interchange.

9 Ground connection

10 EVAP canister purge regulator valve N80
Part of EVAP system

11 EVAP canister
location: Left front wheel housing

12 Engine Control Module (ECM) J220
location: engine compartment, left of battery

13 Fuel pressure regulator

14 Intake Air Temperature sensor G72

15 A/C Cut-out Thermal Switch F163 and 3rd Speed Coolant Fan Control Thermal Switch F165-brown, 4-pin
for vehicles with A/C
vehicles without A/C are plugged off

16 Engine Coolant Temperature sensor G62
Blue
2-pin
for Motronic system

17 After-run Coolant Fan Control Thermal Switch F87 for Engine Coolant Temperature sensor G2
yellow, 4-pin

18 Secondary Air Injection Pump Motor (V1O1)
for EGR system

19 Positive Crankcase Ventilation Heating Element N79.
for Positive Crankcase Ventilation system

20 Engine Speed sensor G28

21 Knock sensor 2 G66