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.
3.2TL & 3.5RL
1998 Acura 3.5RL Special EditionSECTION 3.2TL & 3.5RL
- Turn ignition on. Backprobing, measure voltage between PCM 26-pin connector terminal No. 26 (Brown/Black wire) and PCM 16-pin connector terminal No. 3 (Green wire). See Figure. If voltage is not less than one volt, go to next step. If voltage is less than one volt, go to step 4).
- Turn ignition off. Disconnect PSP switch 2-pin connector. Connect a jumper wire between PSP switch harness connector terminals. Turn ignition on. Backprobing, measure voltage between PCM 26-pin connector terminal No. 26 (Brown/Black wire) and PCM 16-pin connector terminal No. 3 (Green wire). See Figure.
- If voltage is less than one volt, replace PSP switch. If voltage is not less than one volt, repair open in Green wire between PCM 16-pin connector and PSP switch. See WIRING DIAGRAMS article. On 3.2TL, if Green wire is okay, repair open in circuit between PSP switch connector Green/White wire and PCM 22-pin connector terminal No. 22 (Green/Blue wire). On 3.5RL, if Green wire is okay, repair open in circuit between PSP switch connector Green/Blue wire and PCM 22-pin connector terminal No. 22 (Green/Black wire).
- Start engine. Turn steering wheel slowly to full lock position. Backprobing, measure voltage between PCM 26-pin connector terminal No. 26 (Brown/Black wire) and PCM 16-pin connector terminal No. 3 (Green wire). See Figure. If battery voltage is present, PSP switch signal is okay. If battery voltage is not present, go to next step.
- Turn ignition off. Disconnect PSP switch 2-pin connector. Turn ignition on. Backprobing, measure voltage between PCM 26-pin connector terminal No. 26 (Brown/Black wire) and PCM 16-pin connector terminal No. 3 (Green wire). See Figure. If battery voltage exists, replace PSP switch. If battery voltage does not exist, go to next step.NOTE: On 3.5RL, when substituting a known-good PCM, immobilizer code must be rewritten to replacement PCM using Honda PGM tester, or engine will not start.
- Turn ignition off. Disconnect PCM 16-pin connector. Check continuity between ground and PCM 16-pin harness connector terminal No. 3 (Green wire). See Figure. If continuity exists, repair short in Green wire between PCM 16-pin connector and PSP switch. If continuity does not exist, substitute a known good PCM, then recheck for battery voltage. If battery voltage exists, replace original PCM.
RENDER: 1.0x
NO RELATED
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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.