TM 9-6115-729-24
0013
ELECTRONIC TECHNICIAN (ET) TROUBLESHOOTING - Continued
SYMPTOM
4.
Engine Timing Sensor Circuit Test.
System Operation Description:
Use this procedure and Figure 4 to troubleshoot any suspect problems with the following sensors:
Primary (top) engine timing sensor
Secondary (bottom) engine timing sensor
This procedure covers the following diagnostic codes:
190-E-02 Loss of primary (top) engine timing signal
190-E-11 Primary (top) engine timing sensor mechanical failure
342-E-02 Loss of secondary (bottom) engine timing signal
342-E-11 Secondary (bottom) engine timing sensor mechanical failure
MALFUNCTION
Engine timing sensor. Erratic, Intermittent, or Incorrect Signal.
Engine timing sensor. Failure mode not identifiable (Mechanical Failure).
CORRECTIVE ACTION
STEP 1.
On EMCP set ENGINE CONTROL switch to OFF/RESET. Set Battery
Disconnect Switch to OFF. Set DEAD CRANK SWITCH to OFF.
STEP 2.
Connect the Cat ET to connector CDC-P7 (WP 0012).
STEP 3.
Set Battery Disconnect Switch to ON. Set DEAD CRANK SWITCH to NORMAL.
On EMCP set ENGINE CONTROL switch to COOL DOWN/STOP.
STEP 4.
Turn the ENGINE CONTROL switch to MANUAL START.
