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.
1988 Toyota Camry Base, StandardFACTORY OEM SERVICE PROCEDURE
Power Output
- Turn ignition on. Disconnect turbocharging pressure sensor vacuum hose from intake manifold. Connect voltmeter to terminals "PIM" and "E2" (pressure sensor) of ECU connector and measure output voltage under ambient atmospheric pressure.
- Attach a vacuum pump to turbocharging pressure sensor vacuum hose and apply vacuum in specified stages. See Fig 1. Measure and record voltage readings for each stage of applied vacuum. See VACUUM/VOLTAGE SPECIFICATIONS table. Replace sensor if readings are not within specifications.
VACUUM/VOLTAGE SPECIFICATIONS
| Applied Vacum In. Hg | Volts |
|---|---|
| 3.94 | .15-.35 |
| 7.87 | .4-.35 |
| 11.81 | .65-.85 |
| 15.75 | .9-1.1 |
| 19.69 | 1.15-11.35 |
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.
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