Crankshaft Angle Sensor Test
- On M30, crankshaft angle sensor is part of distributor. On Q45, crankshaft angle sensor is a self-contained unit located on left front of engine. If a fault is present in crankshaft angle sensor, Code 11 may be set in ECU memory. If Code 11 is set, proceed to TESTS W/CODES article.
- To test crankshaft angle sensor, Remove crankshaft angle sensor (Q45) or distributor (M30). Leave sensor wiring connected. Using a logic probe or DVOM with an analog bar graph function, touch negative lead to ground and positive lead to one degree and 45/60 degree signal terminals of ECU. See CRANK ANGLE SENSOR SIGNAL HARNESS TERMINALS table. See Fig 1 or Fig 2 .
- Rotate sensor by hand. On a DVOM, one-degree signals should measure about 2.3-2.8 peak volts with sensor rotating. The 45/60-degree signal should measure about .1-.4 peak volt with sensor rotating. If either signal is not present, replace crank angle sensor. On Q45 models, also see SUB-CRANK ANGLE SENSOR (Q45) in this article.
NOTE:
It is possible to measure crank angle sensor voltage with a conventional DVOM without bar graph function; however, peak voltage signal may not easily be determined due to "averaging" of signal.
CRANK ANGLE SENSOR SIGNAL HARNESS TERMINALS
| Model | 1° Signal Terminal | 45°/60° Signal Terminal |
|---|---|---|
| M30 | 3 | 4 |
| Q45 | 1 | 2 |