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Home >> Volvo >> 1991 >> 240 SE, AW70L >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Self-Diagnostics - Ignition System >> Fault Code Testing >> Code 2-1-4 (Impulse Sensor Signal)

Code 2-1-4 (Impulse Sensor Signal)

  1. Turn ignition off. Connect an ohmmeter between terminals No. 10 (Blue/Yellow wire on 240 Series; Red or Blue wire on all others) and No. 23 (Yellow/Red wire on 240 Series; Red or Blue wire on all others).
  2. Resistance should be 215-265 ohms. If engine is hot, resistance could reach 280-300 ohms. If resistance is not as specified, check wiring. If wiring is okay, check sensor. See CONTROL FUNCTION NO. 2 under SELF-DIAGNOSTICS - IGNITION SYSTEM .
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