Tachometer Malfunction: Procedure
- CONFIRM DTC OUTPUT (ECM)
- Check DTCs . Refer to DTC CHECK / CLEAR
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Result
Result Proceed to DTC P0335 is not output A DTC P0335 is output B
B → See step 4
A: Go to next step
- Check DTCs . Refer to DTC CHECK / CLEAR
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- PERFORM ACTIVE TEST USING TECHSTREAM (TACHOMETER)
- Connect the Techstream to the DLC3.
- Turn the ignition switch on (IG) and turn the tester on.
- Operate the Techstream according to the display and select "Active Test" . Refer to DATA LIST / ACTIVE TEST
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Body Electrical / Combination meter / Active Test
Item Test Details Diagnostic Note Tachometer Operation 0 / 1,000 / 2,000 / 3,000 / 4,000 / 5,000 / 6,000 / 7,000 RPM Value selected during Active Test is displayed OK
Engine speed displayed on the tester is approximately the same as that of the tachometer reading.
NG → See step 5
OK: Go to next step
- READ VALUE USING TECHSTREAM (TACHOMETER)
- Connect the Techstream to the DLC3.
- Engine start and turn the tester on.
- Operate the Techstream according to the display and select "Data List" . Refer to DATA LIST / ACTIVE TEST
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Body Electrical / Combination Meter / Data List
Item Measurement Item / Range Normal Condition Diagnostic Note Engine RPM Engine speed
Min.: 0
Max.: 12,750Approximately same as actual engine speed (When engine is running) Unit: RPM OK
Engine speed displayed on the tester is approximately the same as that displayed on the combination meter.
NOTE:Determine whether the value displayed on the tester is within the acceptable range by referring to reference values described in "ON-VEHICLE INSPECTION" See step 3.
NG → See step 5
OK → See step 6
- GO TO DTC P0335. Refer to DTC P0335: Crankshaft Position Sensor "A" Circuit; DTC P0339: Crankshaft Position Sensor "A" Circuit Intermittent
- REPLACE COMBINATION METER ASSEMBLY. Refer to REMOVAL
- USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING