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Ignition and Control Systems - General Diagnostics and Tests (Convertible): Overview Volvo C70 I

Ignition System 4 illustrations

Scheme 1

Scheme 1: Cleaning and greasing engine control module (ECM) connector

Scheme 2

Scheme 2

Scheme 3

Scheme 3
  1. Ignition off.
  2. Wait for approximately 150 seconds (cars with immobilizer 245 seconds).
  3. Remove control module.
  4. Check control module connector for contact resistance and oxidation and remedy according to «Contact resistance and oxidation»(ref-403956-S41958999262011061000000).
  5. Reinstall control module.

Scheme 4

Scheme 4
  1. Ignition off.
  2. Disconnect mass air flow (MAF) sensor. Check mass air flow (MAF) sensor connector for contact resistance and oxidation and remedy according to «Contact resistance and oxidation»(ref-403956-S41958999262011061000000). Connect mass air flow (MAF) sensor.

See also:
9511351
Signal specification