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
1627-05 Fuel Pump Relay
Test Step 3. Test Voltage Supply
Current Below Normal -
Circuit.
Continued
1. Disconnect harness connector
FE-C1 (WP 0009, Figure 27) from
harness connector FA-C18 (WP
0009, Figure 28).
2. Using a digital multimeter, mea-
Voltage OK - (18 - 24 Volts) - Fuel
sure voltage supply between har-
wiring harness is open, replace fuel
ness connector FA-C18 (WP
wiring harness (WP 0064).
0009, Figure 28) terminal 5 and 2
Voltage NOT OK - Proceed to step 3.
ground.
Voltage should be within 18 - 24 Volts.
3. Turn the ignition and battery dis-
connect switch to the OFF posi-
tion.
4. Disconnect the circuit breaker box
(twistlock) harness connector FA-
C41 (WP 0009, Figure 21).
5. Using a digital multimeter, test for
Continuity - (Resistance should be
continuity between circuit breaker
less than 5.0 ohms) - Rear chassis
box (twistlock) harness connector
wire harness OK.
FA-C41 (WP 0009, Figure 21) ter-
No Continuity - voltage supply circuit
minal 7 and harness connector
is open, replace rear chassis wiring
FA-C18 (WP 0009, Figure 28) ter-
harness (WP 0189).
minal 5.
Connect harness connector FE-C4
There should be good continuity.
(WP 0009, Figure 35) to fuel prime
pump relay.
System Response:
1627-06 Fuel Pump Relay
Current Above Normal
ECM will log diagnostic code. A warn-
ing will appear on instrument panel.
Possible Performance Effect:
None
Change 1
0011-150