ENGINE SPEED SENSOR, CRANKSHAFT
GENERAL
Scheme 2
Type
Inductive sensor with permanent magnet. Output voltage is proportional to the magnet flow's change through the sensor. Higher rpm = higher voltage.
Characteristic
Output voltage 5 - 16V at 650 rpm.
Output voltage > or = 100V at 7000 rpm.
Other information
Certain markets only.
TERMINAL
| Connector terminal | Control module terminal | Signal type | Other |
|---|---|---|---|
| #1 | #A6 | Signal | Sinus voltage. Voltage increases with increasing rpm. |
| #2 | #A30 | Signal + | Sinus voltage. Voltage increases with increasing rpm. |
Scheme 3
CHECK
Prerequisites (unless otherwise specified)
- Breakout box connected.
- Sensor connected.
- Engine running.
Scheme 4
Check 1
Engine rpm sensor
Measure alternating voltage between #A6 and #A30. The value should be
Uapprox. 5 - 16V at idle (650 rpm).
U > or = 100V at 7000 rpm.
Note. The voltage reaches its highest value immediately after the gap in the flywheel.
Note. The control module interprets that the curve is symmetric. No check of voltage level.
Check 2
Engine rpm sensor
Measure resistance between #A6 and #A30. The value should be
125.5ohms ± 17ohms at +20 °C.
Scheme 5
Magnet-resistive sensor (hall sensor). The sensor is supplied with 5V voltage and is grounded through the control module.
Characteristic
When the camshaft rotates, a pulsed voltage signal is generated. The signal is 5V when tooth on the camshaft passes the sensor and 0V for gap.
TERMINAL
| Connector terminal | Control module terminal | Signal type | Other |
|---|---|---|---|
| #1 | #A72 | Power supply | The camshaft sensors have common voltage feed. The sensors are supplied with 5 V |
| #2 | #A7 | Ground | The camshaft sensors have common ground connection The sensors are grounded through the control module. |
| #3 | #A31 (camshaft sensor 4) #A32 (camshaft sensor 3) #A33 (camshaft sensor 2) #A34 (camshaft sensor 1) | Signal | Signal output. Sensor against tooth = 5V Sensor against gap = 0V |
Scheme 6
Check
Prerequisites (unless otherwise specified)
- Breakout box connected.
- Sensor connected.
- Engine running.
Scheme 7
Camshaft sensor
Measure voltage between #A7 and respective signal output on the camshaft sensor.
The value should be
approx. 0V gap against sensor.
approx. 5V tooth against sensor
Note. The signal's asymmetrical wave shape depends on the camshaft's teeth.