TM 9-6115-730-24
0013
ELECTRONIC TECHNICIAN (ET) TROUBLESHOOTING - Continued
MALFUNCTION
Current is below normal or circuit is open.
Current is above normal or circuit is grounded.
CORRECTIVE ACTION
CAUTION
The Ether Canister must be removed prior to activating this test.
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.
STEP 3.
Set Battery Disconnect Switch to ON. Set DEAD CRANK SWITCH to NORMAL.
On EMCP set ENGINE CONTROL switch to COOL DOWN/STOP.
a. Proceed to the Diagnostic Overrides screen on the Cat ET.
b. Activate the Ether Injection System. The Diagnostic Override will activate for
ten seconds.
c.
Monitor the active diagnostic code screen on the Cat ET. Check and record
any active diagnostic codes.
d. If no diagnostic codes are active, and the ether system injected ether. The
problem may be intermittent. If the problem is intermittent, refer to WP 0088
and, Electrical Connectors Wiggle Test (WP 0013, SYMPTOM 1) for
information on connectors and wiring.
STEP 4.
Ensure the Battery Disconnect Switch is not turned OFF.
STEP 5.
Check for 24 Vdc on the ether relay terminal connected to the battery. If not
present, repair or replace the wire, as necessary (WP 0088). Verify the problem
has been resolved. If not, continue to the next step.
a. Locate the terminal with the wire connecting to the ether solenoid.
b. Set Battery Disconnect Switch to ON. Set DEAD CRANK SWITCH to
NORMAL. On EMCP set ENGINE CONTROL switch to COOL
DOWN/STOP.
c.
Proceed to the Diagnostic Overrides screen on the Cat ET.
d. Activate the Ether Injection System. The diagnostic override will activate for
ten seconds.
e. Measure 24 Vdc on the ether relay terminal connecting the wire to the ether
solenoid. If not, the ether relay is not operating. Proceed to STEP 6. If OK,
continue to the next step.
f.
On EMCP set ENGINE CONTROL switch to OFF/RESET. Set Battery
Disconnect Switch to OFF. Set DEAD CRANK SWITCH to OFF.
Repair or replace if necessary (WP 0088). Verify the problem has been
resolved. If not, continue to the next step.
0013-13