TM 9-6115-730-24
0013
ELECTRONIC TECHNICIAN (ET) TROUBLESHOOTING - Continued
CORRECTIVE ACTION - Continued
Table 3. Injector Solenoid Harness Terminals.
TERMINAL
SIGNAL
(WP 0088, FO-2, Sheet 2)
1
Injector 1 Supply
2
Injector 2 Supply
3
Injector 3 Supply
4
Injector 4 Supply
5
Injector 5 Supply
6
Injector 6 Supply
7
Injector 6 Return
8
Injector 5 and 6 Return
10
Injector 3 and 4 Return
12
Injector 1 and 2 Return
g. On EMCP set ENGINE CONTROL switch to OFF/RESET. Set Battery
Disconnect Switch to OFF. Set DEAD CRANK SWITCH to OFF. Repeat
this test for each suspect Injector. Ensure that the Injector Solenoid Test is
disabled before handling the jumper wires.
NOTE
The Cat ET may report a SHORT for the injector that shares the supply with the suspect injector.
Disregard the result for this injector.
h. If the Injector Solenoid Test indicates SHORT for the cylinder with the jumper
wire, the ECM and the engine harness are OK. Remove the jumper wire.
Reconnect the connector for the injector harness. Proceed to STEP 11.
i.
If the Injector Solenoid Test indicates open for the cylinder with the jumper
wire. The problem is in the engine harness or in the ECM.
(1) If the problem has not been resolved, repair or replace the engine
harness (WP 0088). Verify the problem has been resolved.
(2) Install another ECM and retest. If the problem is resolved, install a
replacement ECM (WP 0082).
STEP 13.
If the problem is not resolved, check the injector harness under the valve cover
for open or short circuits in the injector wires.
