Camshaft Position (CMP) Sensor

NOTE: Camshaft Position (CMP) sensor may also be known as a pick-up coil or Hall Effect sensor.

Disconnect connector at distributor. Using an ohmmeter, measure resistance between terminals. See Fig 1 . See CMP SENSOR RESISTANCE table. Replace CMP sensor if resistance is not within specification. If resistance is within specification, go to next step.
If ignition coil and CMP sensor test okay, use feeler gauge to check air gap. See CMP SENSOR AIR GAP table. If gap is not correct, loosen CMP sensor mounting screws and move CMP sensor to adjust air gap. Recheck for spark. If spark is still not available, go to TESTS W/CODES article to retrieve stored codes.

Fig 1: Testing CMP Sensor Resistance

Courtesy of SUZUKI OF AMERICA CORP.

CMP SENSOR RESISTANCE ⁽¹⁾

Application

⁽²⁾ Ohms Cold

⁽³⁾ Ohms Hot

Swift

185-275

240-325

⁽¹⁾	Also referred to as pick-up coil or Hall Effect sensor.

⁽²⁾	Cold is 14-122°F (-10-50°C).

⁽³⁾	Hot is 122-212°F (50-100°C).

CMP SENSOR AIR GAP ⁽¹⁾

Application

In. (mm)

Swift

.008 (.20)

⁽¹⁾	Also referred to as pick-up coil or Hall Effect sensor.