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Home >> Pontiac >> 2008 >> G6 Base, 2.4 B >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 2.4L - DTC P0351 To DTC P2544 >> DTC P0685, P0689, or P0690 >> Component Testing

Component Testing

  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.
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