TM 5-2410-241-23-1
0020
Table 1. Powertrain Troubleshooting Procedures - Continued.
0020
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
590-2 Engine Control Module
1. Connect MSD (WP 0016,) select
1. If active 590-2 code is present,
Data Erratic, Intermit-
Powertrain D7 ECM, and check for
proceed to step 2.
tent, or Incorrect
Diagnostic Codes or Event Codes
2. If no active codes are present, the
problem does NOT exist at this
time. Resume normal operation.
2. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-2410-241-10).
3. Disconnect engine ECM connector
V-C4 (WP 0018, Figure 1) from
ECM.
4. Disconnect platform harness (plat-
form to engine) connector MA-C22
(WP 0018, Figure 11) from engine
harness (engine to platform) con-
nector V-C1 (WP 0018, Figure 12).
5. Using a digital multimeter
1. If continuity is found, proceed to
(WP 0296), test for continuity
step 6.
between pin 40 on engine harness
2. If continuity is NOT found, replace
(engine to platform) connector
engine main harness (WP 0055).
V-C1 (WP 0018, Figure 12) and
Ensure all harness connectors are
pin 8 on engine ECM connector
reconnected. Verify correct opera-
6. V-C4 (WP 0018, Figure 1).
tion of machine (TM 5-2410-241-
10).
7. Using a digital multimeter
1. If continuity is found, proceed to
(WP 0296), test for continuity
step 7.
between pin 39 on engine harness
2. If continuity is NOT found, replace
(engine to platform) connector V-
engine main harness (WP 0055).
C1 (WP 0018, Figure 12) and pin 9
Ensure all harness connectors are
on engine ECM connector V-C4
reconnected. Verify correct opera-
(WP 0018, Figure 1).
tion of machine (TM 5-2410-241-
10).
8. Using a digital multimeter (WP
1.
If continuity is found, replace
0296), test for continuity between
engine main harness (WP 0055).
pin 8 on engine ECM connector V-
Ensure all harness connectors are
C4 (WP 0018, Figure 1) and all
reconnected. Verify correct opera-
other pins in engine ECM connec-
tion of machine (TM 5-2410-241-
tor V-C4 (WP 0018, Figure 1).
10).
2.
If continuity is NOT found, proceed
to step 8.
