Manual sections

Wiring diagrams

• Abbreviations
• Accessory Drive Belts
• Airbag
• Alarm, Convertible, Doors, Locks, Mirror - Removal, Replacement and Installation (Convertible)
• Antenna Systems
• Anti-Lock/traction Control
• Anti-Theft, Locks, Steering Column - Removal & Installation (Convertible)
• Application
• Audio, Interior, Seats, Wipers/washer - Adjustment, Removal & Installation (Convertible)
• Automatic HVAC System
• Automatic Trans
• Auxiliary Emission Control Systems
• Axle Shaft, Gear Selector Shaft, Input Shaft - Removal & Installation (Convertible)
• Axle Shafts
• Basic Trouble Shooting
• Blowers, Superchargers & Turbochargers
• Body Electrical
• Brakes
• Brakes - Component Installation and General Information (Convertible)
• Brakes - Supplemental Information (Coupe)
• Cabin Air Filter
• Charging System
• Check Lists
• Climate Units - Removal, Replacement and Installation (Convertible)
• Climate Units - Removal, Replacement and Installation (Coupe)
• Climate Units - Symptom Related Diagnostic Procedures (Convertible)
• Climate Units - Symptom Related Diagnostic Procedures (Coupe)
• Clutches Manual & Hydraulic
• Computer Relearn
• Cooling Fan
• Cooling System (Mechanical)
• Cruise Control Systems
• Diagnostic Connector Locations
• Differentials & Drive Axles
• Door Locks & Anti-Theft Systems
• Door Panel, Exterior & Interior Trim, Glass, Weatherstrip - Removal, Replacement and Installation (Coupe)
• Door, Interior Panels, Frams, Seats - Adjustment, Removal & Installation (Coupe)
• Doors and Lids - Removal, Replacement and Installation (Coupe)
• Drive Cycles
• Driveline/axles
• DTC Index
• Electrical Component Locations
• Electrical Connectors - Information & Repair (Coupe)
• Emission Applications
• Emission Control, Turbocharger - Removal, Replacement and Installation (Convertible)
• Engine
• Engine - Cooling, Ignition & Control Systems - Specifications, Removal & Installation (Convertible)
• Engine - Removal, Replacement and Installation (Convertible)
• Engine - Removal, Replacement and Installation (Coupe)
• Engine - Removal, Replacement and Installation (Coupe): Removal & Installation
• Engine Control and Fuel System - Removal, Replacement & Installation (Convertible)
• Engine Control and Fuel System - Removal, Replacement and Installation (Coupe)
• Engine Control Systems
• Engine Controls, Intake and Exhaust, and Turbocharger System - Removal, Replacement and Installation (Coupe)
• Engine Performance
• Engine Performance Diagnostic Trouble Code (DTC) Diagnostics - 3 of 7 (Coupe)
• Engine with Mountings and Equipment- Fuel System (Convertible)
• Entertainment Systems
• Exterior Body Panels
• Exterior Lights
• Exterior Trim, Glass, Weatherstrips - Removal, Replacement and Installation (Convertible)
• Exterior/interior Trim
• Frames, Subframes & Crossmembers
• Fuel System
• Fuel System - Removal & Installation, Specifications (Coupe)
• Fuses & Circuit Breakers
• Gauges & Instrument Panels
• Gear Shift Position Sensor, Solenoid Control System - Removal & Installation (Coupe)
• General Servicing - All Makes
• Headlights
• Heater
• Identification
• Ignition Switch/steering Lock
• Ignition System
• Interior Panels & Bonded Windows - Removal & Installation (Coupe)
• Interior Trim, Restraints, Steering Column Cover - Removal, Replacement and Installation (Coupe)
• Interior Trim, Seats - Removal, Replacement and Installation (Convertible)
• Lubrication System
• Manual & Power Steering
• Manual HVAC System
• Manual Trans
• Mechanical
• Mechanical - Hydraulic
• Metric Conversions
• Mirrors
• Navigation System
• Oem General Information
• Paint/coatings
• Parking Brake System
• Passive Restraints
• Procedures
• Removal & Installation
• Reset Procedures
• Restraint System - Component Locations & Safety Information (Coupe)
• Restraint System - Removal, Replacement and Installation (Convertible)
• Restraint System - Safety Information & Component Location (Convertible)
• Restraints
• Seats
• Seats - Removal, Replacement and Installation (Coupe)
• Specifications
• Starter
• Steering
• Steering - Removal, Replacement and Installation (Convertible)
• Steering - Removal, Replacement and Installation (Coupe)
• Steering Column
• Steering Column Switches
• Sun Roof/t-Top/convertible Top
• Suspension Front
• Suspension Rear
• Testing & Diagnostics
• Theory & Operation
• Timing Belt
• Towing Systems
• Traction Control Disable
• Transmission
• Transmission - Adaptation (Coupe)
• Transmission - Clutch, Lubrication, Gear-Shift Position (Coupe)
• Transmission - Electrical, Fluids, Clutch (Convertible)
• Transmission - Fluid Specifications, Removal & Installation (Coupe)
• Transmission - Lubrication & Transmission (Convertible)
• Transmission - Removal, Replacement and Installation (Convertible)
• Transmission - Removal, Replacement and Installation (Coupe)
• Wheel & Tire System
• Wheel Alignment
• Wheel Hubs
• Windows
• Wiring - General Information (Convertible)
• Wiring - General Information (Coupe)
• Wiring Diagrams - Engine Performance

Repair manual

Engine Performance Diagnostic Trouble Code (DTC) Diagnostics - 3 of 7 (Coupe) Volvo C70 I

Step-by-step instructions on "Engine Performance Diagnostic Trouble Code (DTC) Diagnostics - 3 of 7 (Coupe)" for Volvo C70 I (1997–2005). Pick an article — removal, installation, adjustment and diagnostics with illustrations.

151subsections

151articles

85illustrations

EFI-442: Pulsed secondary air injection system (PAIR), flow fault

1 article

• EFI-442: Pulsed secondary air injection system (PAIR), flow fault 1

EFI-443: Three-way catalytic converter (TWC) efficiency

1 article

• EFI-443: Three-way catalytic converter (TWC) efficiency 1

Faulty signal

1 article

• Faulty signal 1

Fault tracing information

1 article

• Fault tracing information

Checking fuel and residual pressures

1 article

• Checking fuel and residual pressures

Replacing rear heated oxygen sensor (HO2S)

1 article

• Replacing rear heated oxygen sensor (HO2S) 1

Checking for air leakage in the intake system

1 article

• Checking for air leakage in the intake system 2

Fuel pressure and residual pressure

1 article

• Fuel pressure and residual pressure 9

Checking for open-circuit

1 article

• Checking for open-circuit 3

Verification

1 article

• Verification

Checking fuel pressure and residual pressure

1 article

• Checking fuel pressure and residual pressure

Choosing a method for taking a reading

1 article

• Choosing a method for taking a reading 1

Checking hose and connection

1 article

• Checking hose and connection 1

Starting fuel pump (FP)

1 article

• Starting fuel pump (FP)

Measuring line pressure

1 article

• Measuring line pressure 2

Replacing pressure regulator

1 article

• Replacing pressure regulator 1

Checking for blockage

1 article

• Checking for blockage

Line pressure too low

1 article

• Line pressure too low 1

Checking fuel filter

1 article

• Checking fuel filter

Replacing fuel filter

1 article

• Replacing fuel filter 2

Checking pressure regulator, pressure reduction

1 article

• Checking pressure regulator, pressure reduction 1

Checking pressure regulator, pressure increase

1 article

• Checking pressure regulator, pressure increase 1

Replacing various fuel system components

1 article

• Replacing various fuel system components

Checking residual pressure

1 article

• Checking residual pressure 1

Stop fuel pump (FP)

1 article

• Stop fuel pump (FP)

Disconnecting pressure gauge

1 article

• Disconnecting pressure gauge

Connect pressure gauge

1 article

• Connect pressure gauge

Start fuel pump, check fuel filter

1 article

• Start fuel pump, check fuel filter

Stop fuel pump, check for blockage

1 article

• Stop fuel pump, check for blockage

Start fuel pump, check pressure regulator - pressure reduction

1 article

• Start fuel pump, check pressure regulator - pressure reduction

Start fuel pump, check pressure regulator - pressure increase

1 article

• Start fuel pump, check pressure regulator - pressure increase

Start fuel pump, check residual pressure

1 article

• Start fuel pump, check residual pressure

Signal too high. Intermittent fault

1 article

• Signal too high. Intermittent fault

Checking cables and terminals

1 article

• Checking cables and terminals

Signal too high. Permanent fault

1 article

• Signal too high. Permanent fault 2

Checking for a short-circuit

1 article

• Checking for a short-circuit

Checking ground lead

1 article

• Checking ground lead 1

Checking for an open-circuit

1 article

• Checking for an open-circuit

Checking the signal cable

1 article

• Checking the signal cable

Checking control module connector

1 article

• Checking control module connector 2

Replacing accelerometer component

1 article

• Replacing accelerometer component

Checking power cable resistance to ground

1 article

• Checking power cable resistance to ground

Car-equipment: level

1 article

• Car-equipment: level

Checking the air conditioning (A/C) pressure sensor

1 article

• Checking the air conditioning (A/C) pressure sensor

Checking fuel tank pressure sensor

1 article

• Checking fuel tank pressure sensor

Checking atmospheric pressure sensor

1 article

• Checking atmospheric pressure sensor

Replacing atmospheric pressure sensor component

1 article

• Replacing atmospheric pressure sensor component 1

Replacing air conditioning (A/C) pressure sensor component

1 article

• Replacing air conditioning (A/C) pressure sensor component 1

Replacing fuel tank pressure sensor component

1 article

• Replacing fuel tank pressure sensor component 1

Signal too low: Intermittent fault

1 article

• Signal too low: Intermittent fault

Signal too low: Permanent fault

1 article

• Signal too low: Permanent fault

Replacing accelerometer

1 article

• Replacing accelerometer 1

EFI-445: Pulsed secondary air injection system (PAIR) pump, signal

1 article

• EFI-445: Pulsed secondary air injection system (PAIR) pump, signal 3

Replacing pulsed secondary air injection system (PAIR) pump relay

1 article

• Replacing pulsed secondary air injection system (PAIR) pump relay 1

Checking power cable

1 article

• Checking power cable

Checking signal cable resistance

1 article

• Checking signal cable resistance 1

Checking pulsed secondary air injection system (PAIR) pump relay

1 article

• Checking pulsed secondary air injection system (PAIR) pump relay

Checking for contact resistance and oxidation

1 article

• Checking for contact resistance and oxidation

Connector A

1 article

• Connector A 4

Checking for open-circuit, contact resistance and oxidation

1 article

• Checking for open-circuit, contact resistance and oxidation 1

EFI-446: Pulsed secondary air injection system (PAIR) valve, leakage

1 article

• EFI-446: Pulsed secondary air injection system (PAIR) valve, leakage 1

Leakage. Intermittent fault

1 article

• Leakage. Intermittent fault

Checking hoses and pipes

1 article

• Checking hoses and pipes

Leakage. Permanent fault

1 article

• Leakage. Permanent fault

Checking solenoid valve

1 article

• Checking solenoid valve 1

Checking for air leakage

1 article

• Checking for air leakage

Replacing pulsed secondary air injection system (PAIR) valve

1 article

• Replacing pulsed secondary air injection system (PAIR) valve

Checking solenoid valve signal cable

1 article

• Checking solenoid valve signal cable

Replacing solenoid valve

1 article

• Replacing solenoid valve 1

EFI-447: Pulsed secondary air injection system (PAIR) solenoid valve, signal

1 article

• EFI-447: Pulsed secondary air injection system (PAIR) solenoid valve, signal

Signal missing. Intermittent fault

1 article

• Signal missing. Intermittent fault

Signal missing. Permanent fault

1 article

• Signal missing. Permanent fault 1

EFI-448: Pulsed secondary air injection system (PAIR) pump, flow fault

1 article

• EFI-448: Pulsed secondary air injection system (PAIR) pump, flow fault

Flow too low: Intermittent fault

1 article

• Flow too low: Intermittent fault

Flow too low: Permanent fault

1 article

• Flow too low: Permanent fault

Checking pulsed secondary air injection system (PAIR) pump

1 article

• Checking pulsed secondary air injection system (PAIR) pump

Checking pulsed secondary air injection system (PAIR) pump power supply

1 article

• Checking pulsed secondary air injection system (PAIR) pump power supply

Replacing secondary air injection system (PAIR) pump relay

1 article

• Replacing secondary air injection system (PAIR) pump relay

Checking pulsed secondary air injection system (PAIR) pump resistance

1 article

• Checking pulsed secondary air injection system (PAIR) pump resistance

Replacing secondary air injection system (PAIR) pump

1 article

• Replacing secondary air injection system (PAIR) pump

Checking pulsed secondary air injection system (PAIR) pump ground terminal

1 article

• Checking pulsed secondary air injection system (PAIR) pump ground terminal 2

Cleaning

1 article

• Cleaning 1

Check

1 article

• Check

Checking lilac hose

1 article

• Checking lilac hose

Repairing hose

1 article

• Repairing hose

Checking pulsed secondary air injection system (PAIR) hose

1 article

• Checking pulsed secondary air injection system (PAIR) hose

Checking hoses

1 article

• Checking hoses

Replacing faulty hoses

1 article

• Replacing faulty hoses

EFI-451: Misfire emission level cylinder 1 EFI-452 Misfire emission level cylinder 2EFI-453 Misfire emission level cylinder 3 EFI-454 Misfire emission level cylinder 4 EFI-455 Misf

1 article

• EFI-451: Misfire emission level cylinder 1 EFI-452 Misfire emission level cylinder 2EFI-453 Misfire emission level cylinder 3 EFI-454 Misfire emission level cylinder 4 EFI-455 Misf

Checking ignition components

1 article

• Checking ignition components

Checking spark plugs

1 article

• Checking spark plugs 1

Replacing injector

1 article

• Replacing injector 1

Checking compression

1 article

• Checking compression

Replacing all spark plugs

1 article

• Replacing all spark plugs 3

Checking flywheel/pulse wheel

1 article

• Checking flywheel/pulse wheel

Checking for damage

1 article

• Checking for damage 1

Checking injector cables and terminals

1 article

• Checking injector cables and terminals

Misfire in one cylinder

1 article

• Misfire in one cylinder

EFI-514: Engine cooling fan (FC) low-speed, signal

1 article

• EFI-514: Engine cooling fan (FC) low-speed, signal 1

Checking signal cable, high-speed

1 article

• Checking signal cable, high-speed

Checking engine cooling fan (FC) relay

1 article

• Checking engine cooling fan (FC) relay

Replacing engine cooling fan (FC) relay

1 article

• Replacing engine cooling fan (FC) relay

Verification, continued

1 article

• Verification, continued

EFI-521: Front heated oxygen sensor (HO2S), preheating EFI-522 Rear heated oxygen sensor (HO2S), preheating

1 article

• EFI-521: Front heated oxygen sensor (HO2S), preheating EFI-522 Rear heated oxygen sensor (HO2S), preheating 2

Replacing heated oxygen sensor (HO2S)

1 article

• Replacing heated oxygen sensor (HO2S)

Checking signal cable resistance to ground

1 article

• Checking signal cable resistance to ground

Checking heated oxygen sensor (HO2S)

1 article

• Checking heated oxygen sensor (HO2S)

Checking connector

1 article

• Checking connector

Connecting the breakout box

1 article

• Connecting the breakout box 2

Reading is OK

1 article

• Reading is OK

EFI-532: Ignition discharge module (IDM) group B

1 article

• EFI-532: Ignition discharge module (IDM) group B 1

Checking connectors

1 article

• Checking connectors

Checking terminal #B19

1 article

• Checking terminal #B19

EFI-541: Canister purge (CP) valve, signal

1 article

• EFI-541: Canister purge (CP) valve, signal 1

Checking canister purge (CP) valve

1 article

• Checking canister purge (CP) valve

Replacing canister purge (CP) valve

1 article

• Replacing canister purge (CP) valve 1

Connecting breakout box to Motronic 4.4 connector A (black)

1 article

• Connecting breakout box to Motronic 4.4 connector A (black)

Checking ground terminals

1 article

• Checking ground terminals

Checking cooling system

1 article

• Checking cooling system

Checking ignition cables

1 article

• Checking ignition cables

Replacing ignition cables

1 article

• Replacing ignition cables

Checking distributor cap and rotor

1 article

• Checking distributor cap and rotor 1

Replacing ignition coil

1 article

• Replacing ignition coil 3

Checking for loose connections, contact resistance and oxidation

1 article

• Checking for loose connections, contact resistance and oxidation 1

Checking ignition discharge module (IDM) cables and terminals

1 article

• Checking ignition discharge module (IDM) cables and terminals 1

Checking injector power supply

1 article

• Checking injector power supply

Checking fuel pump (FP) cables and terminals

1 article

• Checking fuel pump (FP) cables and terminals 1

Ensuring correct oil level

1 article

• Ensuring correct oil level

Misfire in several cylinders

1 article

• Misfire in several cylinders

Signal sporadic: Intermittent fault

1 article

• Signal sporadic: Intermittent fault

Signal sporadic: Permanent fault

1 article

• Signal sporadic: Permanent fault

Replacing air conditioning (A/C) pressure sensor

1 article

• Replacing air conditioning (A/C) pressure sensor

Checking accelerometer

1 article

• Checking accelerometer

Replacing atmospheric pressure sensor

1 article

• Replacing atmospheric pressure sensor 1

Checking connector 24/4

1 article

• Checking connector 24/4

Checking ground lead between connector 24/4 and fuel tank pressure sensor

1 article

• Checking ground lead between connector 24/4 and fuel tank pressure sensor

Checking connector 24/2

1 article

• Checking connector 24/2

Checking ground lead between connectors 24/2 and 24/4

1 article

• Checking ground lead between connectors 24/2 and 24/4

Checking signal cable between connector 24/4 and fuel tank pressure sensor

1 article

• Checking signal cable between connector 24/4 and fuel tank pressure sensor

Checking signal cable between connector 24/4 and 24/2

1 article

• Checking signal cable between connector 24/4 and 24/2

Replacing fuel tank pressure sensor

1 article

• Replacing fuel tank pressure sensor

Checking power cable resistance

1 article

• Checking power cable resistance

Checking power cable between connector 24/4 and fuel tank pressure sensor

1 article

• Checking power cable between connector 24/4 and fuel tank pressure sensor

Checking power cable between connector 24/4 and 24/2

1 article

• Checking power cable between connector 24/4 and 24/2 1

Checking power cables

1 article

• Checking power cables

Checking cable between 24/2 and 24/4

1 article

• Checking cable between 24/2 and 24/4

Checking signal cable between fuel tank pressure sensor and connector 24/4

1 article

• Checking signal cable between fuel tank pressure sensor and connector 24/4 1

Signal too high/signal too low. Intermittent fault

1 article

• Signal too high/signal too low. Intermittent fault

Replacing control module

1 article

• Replacing control module

Signal too high/signal too low. Permanent fault

1 article

• Signal too high/signal too low. Permanent fault

Checking cables and connectors

1 article

• Checking cables and connectors 6