LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1997 (Engine Controls And Fuel - 2.4L - DTC P0324 To DTC P1400) >> DTC P0685 or P0690 >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Measure for 70-110 ohms between terminals 85 and 86 of the relay.
    • If the resistance is not within the specified range, replace the relay.
  2. Measure for infinite resistance between terminals 30 and 86 of the relay.
    • If continuity is detected, replace the relay.
  3. Measure for infinite resistance between terminals 30 and 87 of the relay.
    • If continuity is detected, replace the relay.
  4. Measure for infinite resistance between terminals 30 and 85 of the relay.
    • If continuity is detected, replace the relay.
  5. Measure for infinite resistance between terminals 85 and 87 of the relay.
    • If continuity is detected, replace the relay.
  6. Connect a 20A fused jumper wire from the battery positive cable at the battery, to relay terminal 85. Connect a jumper wire from the negative battery cable at the battery, to relay terminal 86. Measure for less than 2 ohms between terminals 30 and 87 of the relay, with a DMM.
    • If the resistance measures more than 2 ohms, replace the relay.
scientia non olet · About LEMON Manuals