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DTC P1706: A/T Gear Position Switch

NOTE: DTC P1706 indicates an open in A/T gear position switch circuit. Possible causes include a disconnected A/T gear position switch connector, an open in A/T gear position switch wire or a faulty A/T gear position switch.
  1. Check A/T gear position switch. See DTC P1705: A/T GEAR POSITION SWITCH  test. Replace switch as needed. If switch is okay, go to next step.
  2. Turn ignition on. Shift to "R" position. Measure voltage between PCM connector "B" terminal B16 and PCM connector "A" terminal A9 or A22. See the WIRING DIAGRAMS article. If voltage is one volt or more, go to next step. If voltage is less than one volt, repair open in wire between terminal B16 and A/T gear position switch.
  3. Shift to "N" or "P" position. Measure voltage between PCM terminal B25 and PCM terminal A9 or A22. See the WIRING DIAGRAMS article. If voltage is one volt or more, go to next step. If voltage is less than one volt, repair open in wire between terminal B25 and A/T gear position switch.
  4. Shift to "D4" position. Measure voltage between PCM terminal B24 and PCM terminal A9 or A22. See the WIRING DIAGRAMS article. If voltage is one volt or more, go to next step. If voltage is less than one volt, repair open in wire between terminal B24 and A/T gear position switch.
  5. Shift to "D3" position. Measure voltage between PCM terminal B8 and PCM terminal A9 or A22. See the WIRING DIAGRAMS article. If voltage is one volt or more, go to next step. If voltage is less than one volt, repair open in wire between PCM terminal B8 and A/T gear position switch.
  6. Shift to "2" position. Measure voltage between PCM terminal B17 and PCM terminal A9 or A22. See the WIRING DIAGRAMS article. If voltage is one volt or more, go to next step. If voltage is less than one volt, repair open in wire between PCM terminal B17 and A/T gear position switch.
  7. Shift to "1" position. Measure voltage between PCM terminal B18 and PCM terminal A9 or A22. See the WIRING DIAGRAMS article. If voltage is less than one volt, repair open in wire between PCM terminal B18 and A/T gear position switch. If voltage is one volt or more, check for loose terminals in PCM connectors. Repair as necessary. If terminal connections are okay, substitute a known good PCM, then recheck. If symptom or indication goes away, replace original PCM.
  8. Shift to "N" or "P" position. Measure voltage between PCM terminal B and PCM terminal A9 or A22. See the WIRING DIAGRAMS article. If voltage is one volt or more, go to next step. If voltage is less than one volt, repair open in wire between PCM terminal B and A/T gear position switch.
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