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Contents Wiring diagrams Section: Engine Control Systems All sections

Ignition and Engine Control Systems - Specifications, Other: Overview Volvo XC90 I

DESCRIPTION OF PARAMETERS, QUICK TEST OF THE FUEL TANK SYSTEM

see DESCRIPTION OF PARAMETERS, QUICK TEST OF THE FUEL TANK SYSTEM

DESCRIPTION OF COMPONENT / FUNCTIONS ACTIVATION

ComponentFunction
Injector (1-6)Injectors 1-6. The injectors open and close approximately 6 times per second. A clicking noise is heard from the injectors. The engine must be switched off.
A/C RELAYA/C relay. Air conditioning A/C must be requested from the control panel. The air conditioning (A/C) relay and the magnetic clutch for the air conditioning (A/C) compressor click.
ENGINE COOLING FAN (FC) pulse width modulation (PWM) controlled 16-93 %The speed of the engine cooling fan (FC) changes depending on which activation is selected. The fan can be heard.
MIL LAMPMalfunction indicator lamp (MIL). The engine must be running and the lamp off before activation. The lamp lights when the start button is pressed and goes out when the stop button is pressed.
LEAK DIAGNOSTIC UNIT, VALVECertain markets only. A clicking noise is heard from the valve in the leak diagnostic unit at activation.
CANISTER PURGE (CP) VALVEThe EVAP canister purge valve opens and closes 5 times per second. The valve is activated by the start button and stopped using the stop button. The canister purge (CP) valve clicks.
COOLING FAN CONTROL MODULEThere is a buzzing noise from the cooling fan for the control modules at activation.
THROTTLE UNIT 50-100 %The shutter in the throttle unit opens. The throttle unit opens to different positions depending on which activation is selected (50, 75 or 100 %) Read off "Throttle Position Sensor (TP) potentiometer 1" or "Throttle Position Sensor (TP) potentiometer 2" at activation to check the function. The engine must be switched off at activation.
TURBOCHARGER CONTROL VALVEThere is a clicking noise from the turbocharger (TC) control valve at activation. The engine must be switched off at activation.

DESCRIPTION OF PARAMETERS

HINT: Not all the parameters described need to be implemented in the control module. This varies between different systems and markets.

HINT: Bank 1: indicates cylinders 1-3 on 6 cylinder engines and all cylinders on 5-cylinder engines.

HINT: The rear heated oxygen sensor (HO2S) on vehicles with fuel trim using the Y-concept (two front heated oxygen sensors (HO2S) and one rear heated oxygen sensors (HO2S) is called "Bank 1".

HINT: Bank 2: indicates cylinders 4-6 on 6-cylinder engines.

DESCRIPTION OF ACTIVATION

HINT: Not all the components/functions described need to be implemented in the control module. This varies between different systems and markets.

HINT: Not all the parameters described need to be implemented in the control module. This varies between different systems and markets.

HINT: Bank 1: indicates cylinders 1-3 on 6 cylinder engines and all cylinders on 5 cylinder engines. The rear heated oxygen sensor (HO2S) on cars with fuel trim using the Y-concept (two front heated oxygen sensors (HO2S) and one rear heated oxygen sensors (HO2S) is called "Bank 1".

HINT: Bank 2: indicates cylinders 4-6 on 6-cylinder engines.

see DESCRIPTION OF ACTIVATION

DESCRIPTION OF DETAILED DIAGNOSTIC TROUBLE CODE INFORMATION READOUT

see DESCRIPTION OF DETAILED DIAGNOSTIC TROUBLE CODE INFORMATION READOUT

see DESCRIPTION OF PARAMETERS

DESCRIPTION OF ACTIVATIONS

HINT: Not all the components/functions described need to be implemented in the control module. This varies between different systems and markets.

HINT: The engine cylinders are counted starting from the cylinder furthest from the flywheel (right-hand side of the vehicle in the direction of travel)

HINT: Bank 1: cylinder 1-3.

HINT: Bank 2: cylinder 4-6.

DESCRIPTION OF READING OFF OF EXTENDED DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

see DESCRIPTION OF FROZEN VALUES

see DESCRIPTION OF STATUS IDENTIFIER

see DESCRIPTION OF COUNTER

see DESCRIPTION OF ACTIVATIONS

see DESCRIPTION OF PARAMETERS

see DESCRIPTION OF READING OFF OF EXTENDED DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

HINT: Not all the components/functions described need to be implemented in the control module. This varies between different systems and markets.

HINT: The engine cylinders are counted starting from the cylinder furthest from the flywheel (right-hand side of the vehicle in the direction of travel)

HINT: Bank 1 (cylinder row nearest the front): cylinders 1, 3, 5 and 7.

HINT: Bank 2 (cylinder row furthest to the rear, nearest the passenger compartment): cylinders 2, 4, 6, and 8.