TM 10-5410-228-24
2.8
UNIT LEVEL TROUBLESHOOTING PROCEDURES Continued.
4.1 ECV ENGINE IDLE SPEED DOES NOT CHANGE (EPG SYSTEM INOPERATIVE) WHEN EPG IS
ENGAGED, INTERNAL POWER ONLY Continued.
1
Check EPG linkage for proper
setup.
Correct and free linkage.
No
Refer to para 2.12.15
Linkage setup OK?
Yes
Check magnetic pickup signal at
EPG control unit terminals 10
and 11. Use a voltmeter with an
impedance of 5 Kohms or
greater. voltage should read 2.5
Vac or greater.
Check pole tip gap over gear
No
tooth. Refer to para 2.12.15 to
Signal OK?
adjust gap.
Yes
Turn power off.
Disconnect cable from pickup and
measure resistance across pins on
pickup coil. Resistance > than 150
ohms.
1
2-20
