2003 Volvo XC90 T-6FACTORY OEM SERVICE PROCEDURE

Component Specifications

The component specification gives the value of the component when the connector is disconnected. Where no value is given, it is not possible to measure a relevant value at the component.

Numbers in brackets indicate to which pin of the component the value corresponds.

Designation  Type  Supply voltage  Value  Other 
Air conditioning (A/C) relay Mechanical relay 12V 92 Ω± 10% at +23°C  
System relay
Starter relay
Mechanical relay 12V 82Ω ± 10% at 23°C (coil)  
A/C pressure sensor Absolute manifold absolute pressure (MAP) sensor 5 V (#3)   Air conditioning (A/C) high pressure
Stop lamp switch Position switch 12 V (#1) The switch is closed when the pedal is depressed (terminals #1-#5)  
Intake pressure sensor   5 V (#3)    
Fuel temperature sensor NTC resistor 5V (#3) 2500Ω± 6% at 20°C (terminals #1-#2) Integrated in the fuel pressure sensor
Fuel pressure sensor Piezo resistive pressure sensor 5V (#3)    
Engine cooling fan (FC) control module - 12 V (#2)    
Evaporative emission system (EVAP) valve Electromagnetic valve 12 V (#1) 20.5Ω ± 1.5Ω  
Valve variable inlet Electromagnetic valve 12 V (#1) 37-44 Ω  
Accelerator pedal (AP) position sensor Electronic pedal sensor with two output signals, PWM and a linear analog signal 12 V (#1) voltage supply digital position sensor
5 V (#6) Voltage supply analog position sensor
   
Throttle unit Electronic throttle module (ETM) with two integrated potentiometers and a throttle motor 5 V (#5) 1.2Ω (#1-#2 motor winding) at normal operating temperature. -
Injector Electromagnetic injector valve 12 V (#2) Approximately 12 Ω at 20°C (terminal #1-#2)  
Camshaft position (CMP) sensor Magneto-resistive sensor 5 V (#1)    
Knock sensor (KS) Piezo electric component   Greater than 1 MΩ at 25 ± 10°C(#1-#2)  
Oil quality sensor   5 V (#3)    
Ignition coil   12 v (#1) Approximately 0.98Ω (primary winding)  
Coolant level sensor Position switch Ground connection (terminal #2) Closed when the engine coolant level is normal  
Preheating front heated oxygen sensor (HO2S) PTC resistor 12 V (#3) 2.18-2.68 Ω at 20°C (terminals #1-#2)  
Preheating, rear heated oxygen sensor (HO2S) PTC resistor 12 V (#1) Approximately 13 Ω ± 1.3Ω (terminal #1-#2)  
Leak diagnostic unit Consists of pump, electromagnetic valve and an internal heating element (PTC resistor) 12 V (#4) 118Ω (#1-#4 pump motor winding)
29.5Ω ± 10% (terminals #3-#4 Valve coil)
30Ω (#2-#4 Heating element)
 
Engine coolant temperature (ECT) sensor NTC resistor 5 V (#1) 15040 Ω at -20°C
2450 Ω at 20°C
318 Ω at 80°C
(#1- #2)
 
Oil pressure sensor Pressure switch (Pressostat) Grounded in the engine block Closed switch when the oil pressure is low  
Reset valve camshaft Electromagnetic valve 12 V (#1) 7.4 Ω ± 0.5Ω at 20°C (terminals #1-#2)  
Flywheel sensor Engine speed sensor - 125, 5Ω ± 17Ω(#1-#2)  
Outside temperature sensor NTC resistor 5 V (#1) 18702Ω at -20°C
6318Ω at 0°C
2424Ω at 20°C
1034Ω at 40°C
(#1- #3)
 
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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