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
0526-05 Turbo Waste Gate
5. Perform Turbo Waste Gate Sole-
0526-06 Turbo Waste Gate
Drive Current Below Normal
noid Test (WP 0038).
Solenoid Test Failed with Tested
- Continued
Device Current High - Proceed to
step 6.
Turbo Waste Gate Solenoid Test
Failed with Tested Device Current
Low - Proceed to Test Step 2.
6. Turn the ignition switch OFF.
7. Remove jumper from harness
connector EA-C15 (WP 0009,
Figure 29) terminals 2 and
ground.
8. Install a jumper wire between har-
ness connector EA-C15 (WP
0009, Figure 29) terminals 1 and
terminal 2.
9. Perform Turbo Waste Gate Sole-
Turbo Waste Gate Solenoid Test
noid Test (WP 0038).
Failed with Tested Device Current
High - Solenoid faulty, replace
turbocharger waste gate solenoid
(WP 0079).
Turbo Waste Gate Solenoid Test
Failed with Tested Device Current
Low - Proceed to Test Step 2.
Test Step 2. Test Engine ECM and
Engine Control Wiring Harness.
1. Turn the ignition switch and bat-
tery disconnect switch to the OFF
position.
2. Remove jumper wire from har-
ness connector EA-C15 (WP
0009, Figure 29).
3. Disconnect Engine ECM harness
connector EA-C1 (WP 0009, Fig-
ure 3) from Engine ECM J2.
4. Using a digital multimeter, test for
Continuity - (Resistance should be
less than 5.0 Ohms) - Proceed to
continuity between EA-C15 (WP
step 5.
0009, Figure 29) harness connec-
tor terminal 2, and Engine ECM
No Continuity - Engine control wiring
harness connector EA-C1 (WP
harness is open, replace engine
0009, Figure 3) terminal 17.
control wiring harness (WP 0080).
There should be good continuity.
Change 1
0011-124
