Home/Volvo/C70/Volvo C70 I (1997-2005)/Repair manual/Climate Units - Symptom Related Diagnostic Procedures (Coupe)/Replacing Component

Contents

Wiring diagrams Section: Climate Units - Symptom Related Diagnostic Procedures (Coupe)

General

Checking Pipes And Components

Checking For Metal Shavings

Replacing Component

Filling Compressor Oil

Vacuum Check

Repair

Filling

Remedy Leakage

Checking Pressure On Low Pressure Side

Leak Tracing And Function Check

Verification

Verification, Continued

Fault-Tracing Information

Checking Communication With the ABS System

Checking the Communication Cable

Check Communication Cable, Power Supply And Ground For ECC Control Module

Checking Power Supply

Checking the Fuse And the Cable

Checking Power Ground To the Data Link Connector (DLC)

Checking For An Open-Circuit

Checking Data Link Connector (DLC) Signal Ground

Checking Power Ground To the Adapter Box

Checking Display Activation

Checking Control Module Communication

Checking Power Supply And Ground For MCC Control Module

Checking D+ Signal From Generator (GEN)

Checking Cables

Checking Blocked Passenger Compartment Temperature Sensor

Checking Performance

Preparations

Checking Air Temperature In the Dashboard Vents

Checking Temperature In Expansion Pipe

Checking Drier Temperature

Vacuum Pumping

Checking Refrigerant And Leakage

Checking Leakage, Refrigerant And Leak Tracing

Checking Pressure

Checking A Missing Component

Checking Blocked Expansion Pipe

Installing Pipe

Checking For Blockage Or Constriction

Checking For Leakage

Vacuum Pumping And Filling Refrigerant

Checking For Dirt

Checking Pressure Switch (Pressostat)

Checking Programming, Blower Fan Speed (ECC)

Programming Driver's Position (Left Or Right Hand Drive) (ECC)

Self-Adjusting Of Shutter Motor Limit Positions

Self-Adjustment Of The Shutter Motor End Position

Checking Passenger Compartment Temperature Programming (ECC)

Checking Programming Of Passenger Compartment Ventilation Filter (ECC)

Checking Speed Signal From Combined Instrument Panel

Communication Problems

Checking Power Supply To the Data Link Connector (DLC)

Checking Power Supply To the Adapter Box

Check, Cables And Components

Checking the Drive Belt

Checking the Compressor With Continuous Drive

Repairs

Checking the Pressure Switch (Pressostat)

Checking Cables, Blower Fan Does Not Start

Checking Cables, Blower Fan Starts

Checking Blower Fan Control (MCC)

Checking Damper, Linkage And Related Parts To Climate Unit

Checking/Cleaning Evaporator

Cleaning the Condenser/Evaporator

General And Equipment

Preparations For Spraying

Check If A Passenger Compartment Ventilation Filter Is Installed

Installing Pipes

Self-Adjusting Of Shutter Motor End Position

Self-Adjustment Of The Damper Motor Limit Positions, ECC

Checking, Cables And Components

Self-Adjustment Of the Damper Motor Limit Positions (ECC)

Checking Sun Sensor Signal

Check the Programming Of the ECC Sun Sensor Sensitivity

Checking ECC Vehicle Speed Signal Programming

Cleaning Windows

Checking Additional Heater

Checking Signal Cable To Timer Type 4

Checking the Supply Voltage To the System

Checking Automatic Starting (With A Timer Unit)

Checking the Timer Display, Phase 0

Choice Of Timer

Checking the Timer LED, Phase 1

Manual Control Of the Heater

Checking the Ground Connection On the Black Cable

Checking the Voltage In the Red Cable

Checking the Voltage In the Green Cable

Checking the Blower Fan

Checking the Combustion Fan, Phase 2

Checking the Glow Phase, Phase 3

Checking the Glow Phase, Phase 3, Continued

Checking For An Open-Circuit Or Short-Circuit

Checking the Starting Phase, Phase 4

Checking the Start, Combustion, Phase 4

Checking Operating Phase, Phase 5

Checking Components

Checking the Cooling Down Phase, Phase 6

Checking Airing-Out

Replacing the Component

Checking the Nozzle Head

Checking the Ground Lead For the Heater

Checking the Power Supply To the Heater

Checking the Signal Cable To the Heater

Checking the Power Supply To the Control Module

Check the Cable For Power Supply To The Glow Plugs

Checking Glow Plugs

Checking the Function Of the Glow Plug

Checking the Function Of the Heater

Checking the Ground Terminals

Cleaning

Checking the Combustion Fan Motor Windings

Checking For An Open Circuit Or A Short Circuit

Check the Power Supply Wire For the Combustion Fan Motor

Installing the Component

Checking the Heater Controls

Selecting the Type Of Climate Control System

Checking the Climate Control System

Checking Ground Lead

Checking the Winding Of the Water Pump

Checking the Function Of the Water Pump

Engagement

Checking the Function Of the Blower Fan

Choice Of Climate Control

Checking Fuses

Checking the Function Of The Blower Fan In The Different Positions

Checking the Power Supply

Checking the Relay And Connectors

Checking the Relay, Low Speed Fan

Checking the Relay, Low Speed Fan Continued

Checking the Connection To the Fan Control (Manual Climate Control)

Checking the Connection To the Fan Control (Electronic Climate Control)

Checking the Fuel Pump Circuit

Checking For a Short-Circuit

Checking the Coolant

Check the Fuel Lines

Checking the Fuel Flow

Checking the Timer Connection

Connecting the Component

Checking the Ground Lead For The Timer

Checking the Power Supply For The Timer

Checking the Function Of the Hazard Warning Signal Flashers

Checking the Cable For Power Supply To the Water Pump

Checking Timer Type 4

All sections

Replacing Component Volvo C70 I

Climate Units - Symptom Related Diagnostic Procedures (Coupe)

Replacing Component

Replace compressor according to Climate control.

Continue Refer to «Vacuum Check»(ref-408542-S03709417482011071200000)