Engine - Coolant Temperature Sensor/Switch: Locations

Components A to F are not shown in the exploded drawing.

A - Brake Light Switch -F- and Brake Pedal Switch -F47-
- In footwell on pedal bracket near brake pedal
B - Diagnostic connector
- Under dash to left of steering column
C - Fuel Pump (FP) relay -J17-
- In micro central box in front passengers foot well, central electrics unit, relay position 4
D - Throttle Position (TP) Sensor -G79- and Sender -2- for accelerator pedal position -G185
- In footwell on accelerator pedal (both senders are installed in one housing)
E - Electronic Power Control (EPC) malfunction indicator light
- In instrument cluster (Significance of EPC light)
F - Malfunction Indicator Light (MIL)
- In instrument cluster (Significance of light)






1 - Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80
2 - 3-pin harness connector
- For Knock sensor (KS) 1 -G61
3 - 4-pin harness connector (green)
- For O2S after TWC -G130- and OS2 heater -Z29-
- GBank 1
4 - 4-pin harness connector (brown)
- For O2S after TWC -G131- and OS2 heater -Z30-
5 - Mass Air Flow (MAF) Sensor -G70 with Intake Air Temperature (IAT) Sensor -G42
6 - 4-pin harness connector
- For O2S -G39- and O2S heater -Z19- after TWC
- Bank 1
7 - Valve -1- for camshaft adjustment -N205
8 - Fuel pressure regulator
9 - Engine Coolant Temperature (ECT) Sensor -G62-
- On coolant pipe behind cylinder head, Bank 1
10 - Throttle Valve Control Module -J338
- With Throttle drive (power accelerator actuation) -G186, Angle sensor -1- for throttle drive (power accelerator actuation) -G187 and Angle sensor -2- for throttle drive (power accelerator actuation) -G188
11 - Secondary Air Injection (AIR) Solenoid Valve -N112
12 - 4-pin harness connector
- For O2S -G108- and O2S heater -Z28- before TWC
- Bank 2
13 - 3-pin harness connector
- For Engine Speed (RPM) Sensor -G28
14 - Camshaft Position (CMP) Sensor -G40
- Bank 2
15 - Secondary Air Injection (AIR) Pump Relay -J299
- In E-box in plenum chamber
16 - Motronic Engine Control Module (ECM) -J220
- In E-box in plenum chamber
17 - Ignition coils with power output stages
- Bank 2
18 - 3-pin harness connector
- For Knock Sensor (KS) 2 -G66
19 - Valve -2- for camshaft adjustment -N208
20 - Intake Manifold Tuning (IMT) Valve
21 - Intake Manifold Tuning (IMT) Valve
22 - Camshaft Position (CMP) Sensor 2 -G163
- Bank 1
23 - Ignition coils with power output stages
- Bank 1
24 - Secondary Air Injection (AIR) Pump Motor -V101
- Below right longmember