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VAPS Module Test

  1. Turn ignition switch to OFF position. Connect DVOM positive lead to circuit No. 606. Connect DVOM negative lead to vehicle ground. See Figure . Position DVOM so it can be observed from inside vehicle. Start vehicle and let idle. Observe reading on DVOM.
  2. DVOM reading should be between 11-14 volts. If voltage reading is correct, proceed to step 4). If voltage reading is incorrect, check VAPS fuse located in fuse panel below left side of instrument panel.
  3. If fuse is good, proceed to VAPS HARNESS & CONNECTOR TEST 3  . If fuse is bad, replace fuse. Repeat steps 1) and 2).
  4. Turn engine off. Connect an analog voltmeter as in step 1). Using a jumper wire, jump circuit No. 200 to ground. Start engine and let idle. Rotate steering wheel for approximately 90 seconds while noting any changes in steering effort.
  5. Continue rotating steering wheel. After 90 seconds, steering effort should change and voltmeter will show a sweep pattern 4 times between battery voltage and zero volts.
  6. If steering effort changes and there are 4 sweeps from battery voltage to zero volts, VAPS module is functioning properly. Proceed to VEHICLE TEST DRIVE  .
  7. If steering effort changes, but there are no sweeps from battery voltage to zero volts, or if there is no change in steering effort, but there are 6 sweeps from battery voltage to zero volts, proceed to ACTUATOR ELECTRICAL  voltage test.
  8. If there is no change in steering effort, but there are 4 sweeps from battery voltage to zero volts, proceed to ACTUATOR ELECTRICAL  resistance test.
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