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
1589-04 Turbocharger Inlet
8. Test for continuity between
Continuity - (Resistance should be
Air Pressure Sensor Volt-
Engine ECM harness connector
less than 5.0 Ohms) - Engine ECM
age Below Normal Code -
FA-C17 (WP 0009, Figure 14) ter-
faulty, replace Engine ECM
Continued
minal 42 and terminal 34.
(WP 0067).
There should be good continuity.
Connect harness connector FE-C1
(WP 0009, Figure 27) to harness con-
nector FA-C18 (WP 0009, Figure 28).
Connect the turbocharger inlet air
pressure sensor harness connector
FE-C6 (WP 0009, Figure 26).
No Continuity - Rear chassis wiring
harness is open, replace rear chassis
wiring harness (WP 0189).
Connect the turbocharger inlet air
pressure sensor harness connector
FE-C6 (WP 0009, Figure 26).
1627-05 Fuel Pump Relay
System Response:
Current Below Normal
ECM will log diagnostic code. A warn-
ing will appear on instrument panel.
Possible Performance Effect:
None.
N OT E
Battery voltage is provided from the 20 amp Trans Control Breaker. The
battery voltage supply circuit 150-RD is spliced and supplied to the
following:
-
Engine ECM harness connector FA-C17 terminal 7
-
Engine ECM harness connector FA-C17 terminal 8
-
Engine ECM harness connector FA-C17 terminal 15
-
Engine ECM harness connector FA-C17 terminal 16
-
Fuel prime pump relay harness connector FE-C4 terminal 1
-
Fuel prime pump relay harness connector FE-C4 terminal 5
The Engine ECM uses the fuel prime pump relay control circuit 365-YL
at Engine ECM harness connector FA-C17 terminal 64 and controls the
fuel prime pump relay at fuel prime pump relay harness connector FE-
C4. The fuel prime pump relay provides voltage from the relay harness
connector FE-C4 terminal 4 to the fuel prime pump supply circuit A893-
OR at the fuel prime pump harness connector FE-C5 terminal 1. The
ground circuit 220-BK for the fuel prime pump is provided between the
fuel prime pump harness connector FE-C5 terminal 2 and frame
ground.
At ignition on, the Engine ECM willactivate the fuel prime pump relay
for up to 3 minutes. The Engine ECM only monitors the fuel prime pump
relay control circuit.
Change 1
0011-148