2.5L CBTA And CBUA

Engine Management Systems

2.5L CBTA and CBUA


Component A - D are not shown in the overview





A - Leak Detection Pump (LDP) -V144- => [ EVAP System Assembly Overview ]
• Located under the wheel housing liner in the right rear wheel housing

B - Oil Pressure Switch -F1- => [ ]

C - Manifold Absolute Pressure (MAP) Sensor -G71- => [ Intake Manifold ]

D - Clutch Position Sensor -G476-
• Only for vehicles with a manual transmission
• Located on the clutch master cylinder

1 - Fuel injector - -N30-, -N31-, -N32-, -N33- and -N83- => [ Fuel Rail and Injectors Assembly Overview ]

2 - Camshaft Position (CMP) Sensor -G40-

3 - 81 pin electrical connector

4 - Motronic Engine Control Module (ECM) -J220-
• Located in the plenum chamber

5 - 40 pin electrical connector

6 - Secondary Air Injection (AIR) Solenoid Valve -N112- => [ Secondary Air Injection System ]
• For the AIR system

7 - Engine Coolant Temperature (ECT) Sensor -G62-

8 - Evaporative Emission (EVAP) Canister Purge Regulator Valve 1 -N80- => [ Intake Manifold ]

9 - Ignition coil with power output stage -N70-, -N127-, -N291-, -N292- and -N323- => [ Ignition coil with power output stage ]

10 - Mass Air Flow (MAF) Sensor -G70- with Intake Air Temperature (IAT) Sensor -G42-
• The Mass Air Flow (MAF) sensor -G70- is no longer installed from Model Year (MY) 2009. The intake air temperature sensor -G42- is installed on the intake manifold with the intake manifold pressure sensor -G71-.

11 - E-box in the engine compartment, on the left side




2.5L CBTA and CBUA continued





12 - Engine Speed (RPM) Sensor -G28-
• Secured to the control housing cover

13 - Throttle Valve Control Module -J338- => [ Intake Manifold ]
• With throttle valve control module throttle drive (for electronic power control), throttle drive angle sensor 1 (for electronic power control) and throttle drive angle sensor 2 (for electronic power control)

14 - Camshaft Adjustment Valve 1 -N205-

15 - Secondary Air Injection (AIR) Pump Motor -V101- => [ Secondary Air Injection System ]

16 - Knock Sensor 1 -G61- => [ Knock Sensors ] See Image Below.

17 - Knock Sensor 2 -G66- => [ Knock Sensors ] See Image Below.

18 - Connector 6-pin
• Located on the left side of the bulkhead
• For the Heated Oxygen Sensor (HO2S) before the catalytic converter and the Oxygen Sensor (O2S) heater

19 - Heated Oxygen Sensor (HO2S) -G39- => [ Exhaust System Overview ] Locations
• Located in the exhaust manifold

20 - 4 pin electrical connector
• Engine codes BGQ and CBUA only
• For the Oxygen Sensor (O2S) - center Three Way Catalytic Converter (TWC), Bank 1 and the O2S heater - center TWC

21 - Oxygen Sensor (O2S (in Center Three Way Catalytic Converter (TWC), Bank 1 -G465-
• Located in the center catalytic converter
• Engine codes BGQ and CBUA only

22 - 4 pin electrical connector
• For the O2S behind TWC and the O2S heater 1 behind TWC

23 - Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-
• Located in the rear catalytic converter





Fuel Rail and Injectors Assembly Overview







2 - Fuel rail

6 - Fuel injector
• Cylinder 1 Fuel Injector -N30-

• Cylinder 2 Fuel Injector -N31-

• Cylinder 3 Fuel Injector -N32-

• Cylinder 4 Fuel Injector -N33-

• Cylinder 5 Fuel Injector -N83-


7 - Intake manifold






Ignition coil with power output stage







• Ignition Coil 1 with Power Output Stage -N70-

• Ignition Coil 2 with Power Output Stage -N127-

• Ignition Coil 3 with Power Output Stage -N291-

• Ignition Coil 4 with Power Output Stage -N292-

• Ignition Coil 5 with Power Output Stage -N323-





Intake Manifold







3 - Evaporative Emission (EVAP) Canister Purge Regulator Valve 1 -N80-

9 - Intake manifold

14 - Manifold Absolute Pressure (MAP) Sensor -G71-
• From Model Year (MY) 2009 with integrated with the Intake Air Temperature (IAT) sensor

18 - Throttle Valve Control Module -J338-
The Throttle Valve Control Module -J338- is
integrated with the following:
• Throttle Position (TP) Sensor -G69-

• Throttle Drive (for Electronic Power Control (EPC)) -G186-

• Throttle Drive Angle Sensor 1 (for Electronic Power Control (EPC) -G187-

• Throttle Drive Angle Sensor 2 (for Electronic Power Control (EPC) -G188-






Secondary Air Injection System







4 - Secondary Air Injection (AIR) Solenoid Valve -N112-

6 - Secondary Air Injection Sensor 1 -G609-

12 - Secondary Air Injection (AIR) Pump Motor -V101-





Oil Pressure Switch -F1-







2 - Oil filter bracket

4 - Oil Pressure Switch -F1-






EVAP System Assembly Overview







6 - EVAP canister
• Engine code CBUA
• Located at the bottom of the spare tire well

7 - EVAP canister
• Engine code CBTA
• Located at the bottom of the spare tire well

16 - Leak Detection Pump (LDP) -V144-
• Located under the wheel housing liner in the right rear wheel housing




Knock Sensors






The knock sensors are located on the back side of the engine block
3 - Knock sensor 1 -G61-
9 - Knock sensor 2 -G66-