Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1997 Acura Integra GS-R, 2D CoupeFACTORY OEM SERVICE PROCEDURE
Automatic Transmission Gear Position Signal
WARNING: This page is about a different variant/trim than selected.
- Turn ignition on. While observing gear indicator, move transmission gear selector lever to each position. If gear indicator does not indicate correct gear position, see the AUTO TRANS DIAGNOSIS - S4XA article for gear indicator testing. If gear indicator indicates correctly for all positions, go to next step.
- Turn ignition off. Disconnect gauge assembly Blue 10-pin connector located behind gauge assembly. Disconnect Transmission control module (TCM) Gray 26-pin connector located behind left kick panel. Turn ignition on. Measure voltage between PCM 32-pin connector terminal No. 9 (Brown/Black wire) and PCM 31-pin connector terminal No. 29 (Light Green/Black wire). See Figure . If voltage is about 5 volts, go to step 4). If voltage is not about 5 volts, go to next step.
- Turn ignition off. Disconnect PCM 31-pin connector. Check for continuity between ground and PCM 31-pin connector terminal No. 29 (Light Green/Black wire). See Figure . If continuity exists, repair short in Light Green/Black wire between PCM and gauge assembly 10-pin connector. See WIRING DIAGRAMS article. If continuity does not exist, substitute a known good PCM, then recheck. If symptom or indication goes away, replace original PCM.
- Turn ignition off. Reconnect 10-pin gauge assemble connector and TCM 26-pin connector. Start engine. Set transmission to Neutral position. Measure voltage between PCM 32-pin connector terminal No. 9 (Brown/Black wire) and PCM 31-pin connector terminal No. 29 (Light Green/Black wire). See Figure . If voltage is less than one volt, go to next step. If voltage is one volt or more, repair open in Light Green/Black wire between PCM 31-pin connector terminal No. 29 and gauge assembly 10-pin connector terminal No. 3. If wire is okay, repair open in Green wire between gauge assembly 10-pin connector terminal No. 6 and A/T gear position switch Gray 14-pin connector terminal No. 14 located on right front side of center console.
- Set transmission to Park position. Measure voltage between PCM 32-pin connector terminal No. 9 (Brown/Black wire) and PCM 31-pin connector terminal No. 29 (Light Green/Black wire). See Figure . If voltage is less than one volt, A/T gear position signal is functioning properly. If voltage is one volt or more, repair open in Green/White wire between gauge assembly 10-pin connector terminal No. 4 and A/T gear position switch 14-pin connector terminal No. 12.
Factory Service Tools
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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.