CLAMP 3330736 - Caterpillar

The engine rpm signal can not be detected. The timing gear pattern returns within one second of being lost and battery voltage is greater than 9 VDC for the last two seconds. The fault is logged only if the engine has been running for three seconds. The fault will be active and logged if the Electronic Control Module (ECM) detects an incorrect signal for one second and the primary sensor signal is nominal. The primary sensor detects an engine speed that is greater than 100 rpm. The battery voltage is greater than 9 VDC for the last two seconds.System Response:The CID-FMI is logged in memory.Test Step 1. Perform the following diagnostic procedure: "Engine Speed/Timing Sensor"Results:
OK - STOP
REPAIRED, OK - STOP