TM 5-2410-241-23-1
0020
Table 1. Powertrain Troubleshooting Procedures - Continued.
0020
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
621-2 Downshift Switch Data
17. Using a digital multimeter (WP
1.
If continuity is NOT found, replace
Erratic, Intermittent, or
0296), test for continuity between
powertrain ECM (WP 0175).
Incorrect - Continued
pin 30 on powertrain ECM connec-
Ensure all harness connectors are
tor X-C3 (WP 0018, Figure 3) and
reconnected. Verify correct opera-
all other pins in powertrain ECM
tion of machine (TM 5-2410-241-
connector X-C3 (WP 0018,
10).
Figure 3).
2.
If continuity is found, replace
steering control harness (WP
0178). Ensure all harness connec-
tors are reconnected. Verify cor-
rect operation of machine (TM 5-
2410-241-10).
622-2 Upshift Switch Data
1. Connect MSD (WP 0016), select
1. If active 622-2 code is present,
Erratic, Intermittent, or
Powertrain D7 ECM, and check for
proceed to step 4.
Incorrect
Diagnostic Codes or Event Codes
2. If active 622-2 code is NOT pres-
ent, proceed to step 2.
2. Push Upshift button for 15 sec-
onds (Figure 30, Item 1).
Figure 30. Upshift button.
0020
3. Check for Diagnostic Codes or
1. If active 622-2 code is present,
Event Codes (WP 0013).
proceed to step 4.
2. If no active codes are present, the
problem does NOT exist at this
time. Resume normal operation.
4. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-2410-241-10).
