TM 9-6115-730-24
0013
ELECTRONIC TECHNICIAN (ET) TROUBLESHOOTING - Continued
CORRECTIVE ACTION - Continued
STEP 3.
Measure the voltage to LSM A4 (Figure 6).
a. Verify that the ground wire on terminal 16 has continuity to ground.
b. Check the voltage between Engine Ground and the following test points in
Table 4. If voltage is not present at a test point, the problem is in the device,
in the wire or in the connector that precedes the point in the circuit.
Table 4. Speed Control Circuit Test Points.
DEVICE
TERMINAL
Either side
DEAD CRANK SWITCH
Terminals for NORMAL crank
J30/P30 connector
9
Resistor Assembly A7
11
Resistor Assembly A7
12
GSC
RM2
ENGINE CONTROL Switch
6
ENGINE CONTROL Switch
10
GSC
RM1
GSC
RM39
TB-4
17-22
Connector ENG-P37
40
STEP 4.
On EMCP set ENGINE CONTROL switch to OFF/RESET. Set Battery
Disconnect Switch to OFF. Set DEAD CRANK SWITCH to OFF.
a. Connect the Cat ET to connector CDC-P7 (WP 0012).
STEP 5.
If the voltage is not 24 3 Vdc at a test point, repair the device, connectors
sheets 1-4).
STEP 6.
After the voltage supply to LSM A4 is correct. Proceed to STEP 7.