Operation CHARM: Car repair manuals for everyone.

Speedometer and/or Odometer Inaccurate or Inoperative

TEST DESCRIPTION

Steps 1-7:




Steps 8-14:




The numbers below refer to the step numbers on the diagnostic table.
4. This step tests for a malfunctioning component that is interrupting the vehicle speed signal circuit.
5. This step tests for the proper voltage from the IPC.