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Engine Performance Diagnostic Trouble Code (DTC) Diagnostics - 2 of 7 (Coupe): Removal & Installation Volvo C70 I

Testing & Diagnostics 2 illustrations ~468 words

Replacement of fuel pump relay

  1. Test with a new fuel pump relay.

Scheme 684

Scheme 684
Scheme 684

Press Continue when fault is repaired.

  1. Continue Refer to «Verification»(ref-408500-S24493816552011071200000)

Scheme 685

Scheme 685
Scheme 685
  1. Ignition off.
  2. Remove the windshield wiper arms.
  3. Remove the plenum cover.
  4. Disconnect the series resistance.
  5. Connect the lead between relay coupling connectors 1 and 5.
  6. Ignition on. Connect a voltmeter between the series resistance's connector 2 (to fuel pump relay) and ground.

The voltmeter should show battery voltage.

  1. OK Refer to «Check the series resistance»(ref-408500-S25794429412011071200000)
  2. NOT OK Refer to «Checking for open-circuit»(ref-408500-S28903994302011071200000)

Replacement of series resistance

  1. Test with a new series resistance.
  1. Continue Refer to «Verification»(ref-408500-S24493816552011071200000)

Stop fuel pump, replace pressure regulator

  1. Switch off ignition.
  2. Disconnect jumper lead between relay base terminals 1 and 3.
  1. Continue Refer to «Replacing pressure regulator»(ref-408500-S15934717642011071200000)
  1. Switch off ignition.
  2. Disconnect jumper lead between relay base terminals 1 and 3.
  1. Continue Refer to «Replacing pressure regulator»(ref-408500-S13366645942011071200000)

Stop fuel pump, replace fuel filter

  1. Switch off ignition.
  2. Disconnect jumper lead between relay base terminals 1 and 3.
  1. Continue Refer to «Replacing fuel filter»(ref-408500-S18511147702011071200000)
  1. Switch off ignition.
  2. Disconnect jumper lead between relay base terminals 1 and 3.
  1. Continue Refer to «Replacing pressure regulator»(ref-408500-S26774064962011071200000)
  1. Switch off ignition.
  2. Disconnect jumper lead between relay base terminals 1 and 3.
  1. Continue Refer to «Replacing pressure regulator»(ref-408500-S01490561822011071200000)
  1. Test with a new fuel pump relay.

Press Continue when fault is repaired.

  1. Continue Refer to «Verification»(ref-408500-S18329649632011071200000)
  1. Test with a new series resistance.
  1. Continue Refer to «Verification»(ref-408500-S18329649632011071200000)
  1. Switch off ignition.
  2. Disconnect jumper lead between relay base terminals 1 and 3.
  1. Continue Refer to «Replacing pressure regulator»(ref-408500-S20415089872011071200000)
  1. Switch off ignition.
  2. Disconnect jumper lead between relay base terminals 1 and 3.
  1. Continue Refer to «Replacing pressure regulator»(ref-408500-S11996195132011071200000)
  1. Switch off ignition.
  2. Disconnect jumper lead between relay base terminals 1 and 3.
  1. Continue Refer to «Replacing fuel filter»(ref-408500-S31743698672011071200000)
  1. Switch off ignition.
  2. Disconnect jumper lead between relay base terminals 1 and 3.
  1. Continue Refer to «Replacing pressure regulator»(ref-408500-S28453120362011071200000)
  1. Switch off ignition.
  2. Disconnect jumper lead between relay base terminals 1 and 3.
  1. Continue Refer to «Replacing pressure regulator»(ref-408500-S42740645252011071200000)
  1. Test with a new fuel pump relay.

Press Continue when fault is repaired.

  1. Continue Refer to «Verification»(ref-408500-S11036285222011071200000)
  1. Test with a new series resistance.
  1. Continue Refer to «Verification»(ref-408500-S11036285222011071200000)
  1. Switch off ignition.
  2. Disconnect jumper lead between relay base terminals 1 and 3.
  1. Continue Refer to «Replacing pressure regulator»(ref-408500-S05870705442011071200000)
  1. Switch off ignition.
  2. Disconnect jumper lead between relay base terminals 1 and 3.
  1. Continue Refer to «Replacing pressure regulator»(ref-408500-S06288046882011071200000)
  1. Switch off ignition.
  2. Disconnect jumper lead between relay base terminals 1 and 3.
  1. Continue Refer to «Replacing fuel filter»(ref-408500-S13257958862011071200000)
  1. Switch off ignition.
  2. Disconnect jumper lead between relay base terminals 1 and 3.
  1. Continue Refer to «Replacing pressure regulator»(ref-408500-S06311439432011071200000)
  1. Switch off ignition.
  2. Disconnect jumper lead between relay base terminals 1 and 3.
  1. Continue Refer to «Replacing pressure regulator»(ref-408500-S34777849202011071200000)

More articles — Engine Performance Diagnostic Trouble Code (DTC) Diagnostics - 2 of 7 (Coupe)