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01 Relays and Modules02 Sensors and Switches03 Maintenance04 Engine, Cooling and Exhaust05 Powertrain Management06 Transmission and Drivetrain07 Brakes and Traction Control08 Starting and Charging09 Power and Ground Distribution10 Steering and Suspension11 Heating and Air Conditioning12 Restraint Systems13 Accessories and Optional Equipment14 Body and Frame15 Cruise Control16 Instrument Panel, Gauges and Warning Indicators17 Lighting and Horns18 Windows and Glass19 Wiper and Washer Systems
Volvo XC70 L5-2.5L Turbo VIN 59 B5254T2 (2003)05 · Powertrain Management
05 · Diagnostics

Engine Control Module: Diagrams (page 42 of 126)

Make
Volvo
Model
XC70
Engine
L5-2.5L Turbo VIN 59 B5254T2
Year
2003
Section
Relays and Modules - Computers and Control Systems › Engine Control Module › Diagrams
Powertrain ManagementDiagram Information and Instructions · page 42 of 126
Engine Control Module: Diagrams (page 42 of 126) – Volvo XC70 L5-2.5L Turbo VIN 59 B5254T2 (2003)

Repair wiring and cable terminals, using appropriate procedures. 
In theory, the resistance across contacts, leads and terminals should be 0 [ohm]. However, there is always some resistance due to terminal oxidation.
If this resistance becomes too great the result will be a malfunction. The magnitude of the resistance before it causes a malfunction depends on the circuit
load.

Checks:

-

Check the cables visually according to "Check Terminals Visually."

 

NOTE:  Do not apply rust solvent spray or grease to the Heated Oxygen Sensor (HO2S) or combined instrument panel connectors.

-

Ignition off

-

Disconnect the battery negative terminal

-

Use compressed air to clean the disconnected connector

-

Apply rust solvent spray 1161422 to the disconnected connectors

-

Blow clean using compressed air.

Pinch or Ctrl + scroll to zoom. Double-tap to reset.

Parts & tools for this job For 2003 Volvo XC70 2.5L

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