4.2L BFM Overviews
Component Locations: Engine Management System
4.2L BFM Overviews
1 EVAP canister purge regulator valve 1 -N80-
2 Engine control module -J623-
3 Mass air flow sensor -G70- with Intake air temperature sensor -G42-
4 Camshaft adjustment valve 1 -N205- => [ Valvetrain Overview ] See Image Below.
5 Throttle valve control module -J338-
6 Secondary air injection solenoid valve -N112-
7 Camshaft position sensor 2 -G163- => [ Left Camshaft Position Sensor ] See Image Below.
8 Fuel pressure regulator
• Not installed with engine code BGK
9 Ignition coils with power output stages
10 Camshaft adjustment valve 2 -N208- => [ Camshaft adjustment valve 2 ] See Image Below.
11 3-pin connector
• For Knock sensor 1 -G61- and Knock sensor 2 -G66-
12 Intake manifold tuning valve -N156-
• Engine code BFM and BGK 4.2L => [ Front view (engine code BFM and BGK 4.2L) ] See Image Below.
13 Intake manifold tuning valve 2 -N261-
• Engine code BFM and BGK 4.2L, Intake air switch-over valve -N335- => [ Front view (engine code BFM and BGK 4.2L) ] See Image Below.
14 Camshaft position sensor -G40- => [ Valvetrain Overview ] See Image Below.
15 Ignition coils with power output stages
• Cylinder bank 1
16 Secondary air injection pump motor -V101- => [ Secondary Air Injection (AIR) Pump ]
Front view (engine code BFM and
BGK 4.2L)
1 - Intake manifold tuning valve -N156-
Activation for both vacuum diaphragms
2 - Vacuum diaphragms for intake manifold change-over
3 - Intake air switch-over valve -N335-
Activation for flap in air filter
a - T-connector for vacuum supply from Intake manifold tuning valve -N156-
b - Vacuum supply from intake manifold
c - Vacuum line to low pressure reservoir (vacuum reservoir)
d - Vacuum supply T-connector from Intake air switch-over valve -N335- and low pressure reservoir
e - T-connector for vacuum supply from Intake manifold tuning valve -N156-
f - Vacuum line to flap in air filter
Valvetrain Overview
16 - Camshaft Adjuster with Camshaft adjustment valve 1 -N205-
30 - Camshaft position sensor -G40-
Left Camshaft Position Sensor
Electrical connector -arrow- from the Camshaft position sensor 2 -G163-
Camshaft adjustment valve 2
Electrical connector to Camshaft adjustment valve 2 -N208- in left cylinder head.