TM 5-3805-293-23-1
0011
Table 2. Engine Troubleshooting with Codes for the 120M Motor Grader - Continued.
CDI FMI CODE
ERROR/EVENT
CORRECTIVE ACTION
1627-06 Fuel Pump Relay
2. Disconnect harness connector
Current Above Normal -
FE-C4 (WP 0009, Figure 35) from
Continued
fuel prime pump relay.
3. Perform Fuel Pump Relay
1627-05 Becomes Active - Fuel
Command Override (WP 0035)
prime pump relay faulty, replace fuel
and check if diagnostic code
prime pump relay (Fuel Transfer
1627-05 becomes active.
Pump, Test Step 4, WP 0035).
1627-06 Remains Active - Proceed
to step 4.
4. Turn ignition switch and battery
disconnect switch to the OFF
position.
5. Disconnect harness connector
FE-C1 (WP 0009, Figure 27) from
harness connector FA-C18 (WP
0009, Figure 28).
6. Using a digital multimeter, test
Continuity - Fuel wiring harness is
fuel prime pump relay control cir-
shorted between harness connector
cuit 365-YL for continuity between
FE-C1 relay harness connector FE-
harness connector FE-C1 (WP
C4, replace fuel wiring harness (WP
0009, Figure 27) terminal 2, and
0064).
all other terminals and ground.
No Continuity- Proceed to step 7.
There should be no continuity.
7. Disconnect Engine ECM harness
connector FA-C17 (WP 0009, Fig-
ure 14) from Engine ECM J1.
8. Using a digital multimeter, test for
Continuity - Rear chassis wiring
continuity between Engine ECM
harness is shorted between engine
harness connector FA-C17 (WP
ECM harness connector FA-C17 and
0009, Figure 14) terminal 64, and
harness connector FA-C18. Replace
all other terminals and ground.
rear chassis wiring harness (WP
0189).
There should be no continuity.
Connect harness connector FE-C4
(WP 0009, Figure 35) to fuel prime
pump relay.
No Continuity- ECM faulty, replace
Engine ECM (WP 0067).
Connect harness connector FE-C4
(WP 0009, Figure 35) to fuel prime
pump relay.
Connect harness connector FE-C1
(WP 0009, Figure 27) to harness con-
nector FA-C18 (WP 0009, Figure 28).
0011-152