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.
Inspection Procedure
HINT:
If there is not the LEXUS hand-held tester, begin with STEP 2.
- Perform active test.
PREPARATION:
- Connect the LEXUS hand-held tester to the DLC3.
- Turn ignition switch ON and LEXUS hand - held tester main switch ON.
- Select the ACTIVE TEST mode on the LEXUS hand - held tester.
CHECK:
Check that the probe moves as LEXUS hand - held tester directs in each range.
OK:
The probe operates normally.
- OK: Proceed to next circuit Inspection shown in problem symptoms table (See PROBLEM SYMPTOMS TABLE ).
- NG: Go to next Step.
- Check tachometer (See
INSPECTION
).
- NG: Replace tachometer.
- OK: Go to next step.
- Check circuit plate (See
INSPECTION
).
- NG: Replace circuit plate.
- OK: Go to next Step.
Check and replace combination meter (See CIRCUIT ).
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.