ELECTRICAL COMPONENT LOCATOR
1995 Volvo 850
1995 ELECTRICAL COMPONENT LOCATION
Volvo Electrical Components
850
SAFETY PRECAUTION
WARNING: When working on vehicles equipped with Supplemental
Restraint System (SRS), never apply electrical voltage to
the system. This could cause the SRS (air bag) to be
deployed.
BUZZERS, RELAYS & TIMERS
Component Component Location
ABS Combination Relay Above ABS control module, near
brake master cylinder.
A/C Relay Behind glove compartment.
Anti-Theft Alarm Module
Relay On central electric unit,
position No. 14.
Blower Fan Relay (High Speed) Behind glove compartment.
Central Locking & Delayed
Inside Lighting Relay On central electric unit,
position No. 11.
Deadlock Setting Relay On central electric unit,
position No. 8.
Engine Cooling Fan Relay On top right of radiator
shroud.
Fog Lamp Relay On central electric unit,
position No 7.
Fuel Pump Relay On central electric unit,
position No 2.
Heated Rear Seat Relay On central electric unit,
position No. 17.
Heated Rear Window & Door
Mirrors Relay On central electric unit,
position No. 13.
Intermittent Wiper Relay
(Front) On central electric unit,
position No. 9.
Intermittent Wiper Relay
(Rear) On central electric unit,
position No. 10.
Main Headlamp Relay With
Bulb Malfunction Indicator On central electric unit,
position No. 3.
Main Relay On top left of radiator
shroud.
Overload Relays (3) On central electric unit,
positions No. 4, 5 & 6.
Seat Belt Reminder/Key
Warning Relay On central electric unit,
position No. 15.
Secondary Air Pump Relay Front left side of engine
compartment.
Speed Warning Or Exhaust
Temperature Sensor Relay On central electric unit,
position No. 12.
CIRCUIT PROTECTION DEVICES
Component Component Location
Central Electrical Unit On left rear of engine
compartment.
CONTROL UNITS
Component Component Location
ABS Control Module On left rear of engine
compartment, above ABS
hydraulic unit.
Anti-Theft Alarm/Central Lock
Remote Control Module Behind right side of dash.
Cruise Control Module On electric control unit,
position No. 1.
Direct Ignition System
Control Module On right front inner fender
panel, in control module box.
Electronic Climate Control
Control Unit Integrated with A/C control
panel.
Engine Control Module On right front inner fender
panel, in control module box.
Ignition Discharge
Module/Ignition Coil Left side of engine
compartment.
Seat Control Modules Under driver’s & passenger’s
seat.
SRS Sensor Unit Under floor console behind
shift lever.
Sunroof Control Module Behind interior roof lamp
assembly.
Transmission Control Module On right front inner fender
panel, in control module box.
MOTORS
Component Component Location
Blower Motor Behind right side of dash, on
A/C-heater housing.
Power Sunroof Motor On front center of sunroof
opening.
SENDING UNITS & SENSORS
Component Component Location
ABS Brake Pedal Sensor On right side of brake master
cylinder.
ABS Wheel Speed Sensors On each wheel hub.
Acceleration Sensor On center of firewall.
A/C High Pressure Sensor
(Pressostat) On A/C line, on right side of
firewall.
A/T Fluid Temperature Sensor On left side of transaxle.
Bulb Failure Warning Sensor On left side of luggage
compartment.
Camshaft Position Sensor On right rear of engine.
Duct Temperature Sensor (ECC) In driver’s or passenger’s
side ventilation duct.
EGR Temperature Sensor On base of EGR valve, on left
rear of engine.
Engine Coolant Temperature
Sensor On left front of engine.
Heated Oxygen Sensor (Front) In front of catalytic
converter.
Heated Oxygen Sensor (Rear) Behind catalytic converter.
In-Car Temperature Sensor Behind driver’s or passenger’s
grab handle.
Intake Air Temperature Sensor In air intake hose, near air
cleaner.
Intake Manifold Pressure Sensor On left side of engine, on
intake manifold.
Knock Sensors (2) On lower front of engine.
Mass Air Flow Sensor On air cleaner housing.
Oil Pressure Sensor Lower left side of engine.
Outside Temperature Sensor (ECC) On right side of firewall,
near A/C air intake.
Pulse (Engine Speed) Sensor On rear of engine, above
bellhousing.
Solar Sensor (ECC) On top right of dash.
Throttle Position Sensor On throttle body assembly.
Transmission Range Sensor On left side of transaxle.
SOLENOIDS & SOLENOID VALVES
Component Component Location
A/C Switch Solenoid On A/C compressor.
A/T Shift Solenoids On transaxle valve body.
Auxiliary Air Intake Solenoid Front center of engine
compartment, next to
radiator.
EVAP Valve On top left of radiator
shroud.
Idle Air Control Valve On left rear engine.
P-Shift Lock Solenoid (A/T) Under shifter console, forward
of shift lever.
Turbo Control Valve Between turbo & left rear
of engine.
Variable Intake Manifold Solenoid On left side of engine
compartment, between air
cleaner & engine.
SWITCHES
Component Component Location
A/C High Pressure Switch On A/C line, near
receiver-drier.
Brake Switch On bracket, above brake pedal.
Back-Up Lamp Switch On transaxle.
Clutch Switch On bracket, above clutch
pedal.
Handbrake Switch At base of handbrake.
Seat Belt Reminder Switch On driver-side seat belt
buckle.
MISCELLANEOUS
Component Component Location
ABS Hydraulic Unit On left rear of engine
compartment, near brake master
cylinder.
Alarm Horn Rear center of engine
compartment.
Blower Motor Resistor Mounted on blower fan housing.
Data Link Connector On center console, forward of
shift lever & near ECM.
Diagnostic Connector On center console, forward of
shift lever & near ECM.
EGR Converter On top center of radiator
shroud.
Front Fog Lamp Bridge On central electrical unit.
PTC-Resistor Mounted on fresh air intake
hose, near air filter.
