If a fault is present in crank angle sensor, code 11 may be set in ECU memory. If code 11 is set, perform appropriate CODE 11 (CRANK ANGLE SENSOR) test in TESTS W/CODES article.
To test crank angle sensor, leave sensor wiring connected. Using a logic probe or DVOM with an analog bar graph function, connect negative lead to ground and alternately connect positive lead to terminals No. 42 and 52 of ECU connector (one-degree input signal). Crank the engine and note voltage pulse signals. For ECU connector terminal identification, see L - WIRING DIAGRAMS article.
Alternately probe ECU connector terminals No. 41 and 51 (120-degree input signals). Crank engine and note voltage pulse signals.
Peak voltage for one-degree signal should measure about 2.3-2.8 volt on bar graph DVOM. Peak voltage for 120-degree signal should measure about .1-.4 volt. If one-degree or 120-degree signal is not present, check harness for short or open circuit. If no problems are found, replace crank angle sensor.

NOTE: It is possible to measure crank angle sensor voltage with a conventional DVOM (no bar graph function); however, it may not be easy to determine peak voltage signal due to the "averaging" of digital signal.

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.

Safety Warning

Crank Angle Sensor

Use the Manual With the Right Hardware

When to See a Mechanic

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