Series 60 – SPN 723/FMI 8 – CAMSHAFT POSITION SENSOR FAULT

A typical diagnosis is time out.
77.3.1
Time Out Check
Check as follows:
1. Disconnect the MCM 120–pin connector.
2. Measure the resistance between pins 44 and 45 of the MCM 120–pin connector.
[a] If the resistance is greater than 140 Ω, go to step 5.
[b] If the resistance is less than 140 Ω, go to step 3.
3. Disconnect the CMP Sensor.
4. Measure the resistance between pins 44 and 45 of the MCM 120–pin connector.
[a] If the resistance is less than 3 Ω, repair the short between pins 44 and 45 of the MCM
120–pin connector and the CMP Sensor. Refer to section 77.3.1.1.
[b] If the resistance is greater than 3 Ω, replace the CKP Sensor. Refer to section 77.3.1.1.
5. Disconnect the CMP Sensor.
6.7.Jumper pins 1 and 2 of the CKP Sensor harness.
Measure the resistance between pins 44 and 45 of the MCM 120–pin connector.
[a] If the resistance is greater than 3 Ω, repair the open between pins 42 and 43 of the
MCM 120–pin connector and the CKP Sensor connector. Refer to section 77.3.1.1.
[b] If the resistance is less than 3 Ω, replace the CKP Sensor. Refer to section 77.3.1.1.