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Home >> Isuzu >> 2007 >> Ascender RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 4.2L - DTC P2119 To DTC P2A01 >> DTC P2440 >> Component Testing
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Component Testing

Relay Test

  1. Test between the normally-closed switch terminals, if any, for 0 ohms.
  2. Test between the normally-open switch terminals for infinite ohms.
  3. Test between each switch terminal and either coil terminal for infinite ohms.
  4. Connect the relay coil terminals to ground and fused power to energize the relay.
  5. Test between each switch terminal and each coil terminal for 0 volts.
  6. Test between the normally-closed switch terminals, if any, for infinite ohms.
  7. Test between the normally-open switch terminals for 0 ohms.