1998 Acura Integra GS-R, 4D SedanFACTORY OEM SERVICE PROCEDURE

Automatic Transmission Gear Position Signal: 3.2TL

  1. Turn ignition on. While observing gear indicator, shift transmission gear selector to each position. If gear indicator does not indicate correct gear position, see AUTO TRANS DIAGNOSIS - M5HA article in the AUTO TRANS DIAGNOSIS section. If gear indicator illuminates correctly for all positions, go to next step.
  2. Turn ignition off. Disconnect gauge assembly 16-pin connector. Turn ignition on. Backprobing, measure voltage between PCM 26-pin "A" connector terminal No. 26 (Brown/Black wire) and PCM 26-pin "E" connector terminal No. 24 (Yellow/Green wire). See Figure. If voltage is about 5 volts, go to step 4). If voltage is not about 5 volts, go to next step.
  3. Turn ignition off. Disconnect PCM 26-pin "E" connector. Check for continuity between ground and PCM 26-pin "E" harness connector terminal No. 24 (Yellow/Green wire). If continuity exists, repair short in Yellow/Green wire between PCM 26-pin "E" connector terminal No. 24 and gauge assembly 16-pin connector terminal No. 8. If continuity does not exist, substitute a known good PCM, then recheck for voltage. If voltage is about 5 volts, replace original PCM.
  4. Turn ignition off. Reconnect gauge assembly 16-pin connector. Set transmission to Neutral position. Start engine. Backprobing, measure voltage between PCM 26-pin "A" connector terminal No. 26 (Brown/Black wire) and PCM 26-pin "E" connector terminal No. 24. (Yellow/Green wire) See Figure. If voltage is less than one volt, go to next step. If voltage is not less than one volt, repair open in Yellow/Green wire between PCM 26-pin "E" connector terminal No. 24 and gauge assembly 16-pin "B" connector terminal No. 8.
  5. Set transmission to Park position. Backprobing, measure voltage between PCM 26-pin "A" connector terminal No. 26 and PCM 26-pin "E" connector terminal No. 24. See Figure. If voltage is less than one volt, A/T gear position signal is functioning properly. If voltage is not less than one volt, repair open in gauge assembly.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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