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
12. Release downshift button. Using a
1. If continuity is NOT found, proceed
Erratic, Intermittent, or
digital multimeter (WP 0296), test
to step 13.
Incorrect - Continued
for continuity between pin 4 and
2. If continuity is found, replace
pin 5 on downshift / upshift switch
steering and transmission control
connector (WP 0018, Figure 59).
handle (WP 0237). Ensure all har-
ness connectors are reconnected.
Verify correct operation of
machine (TM 5-2410-241-10).
13. Using a digital multimeter (WP
1.
If continuity is found, proceed to
0296), test for continuity between
step 14.
pin 23 on powertrain ECM connec- 2.
If continuity is NOT found, replace
tor X-C2 (WP 0018, Figure 4) and
steering control harness (WP
pin 5 on steering harness down-
0178). Ensure all harness connec-
shift / upshift switch connector X-
tors are reconnected. Verify cor-
C4 (WP 0018, Figure 58).
rect operation of machine (TM 5-
2410-241-10).
14. Using a digital multimeter (WP
1. If continuity is found, proceed to
0296), test for continuity between
step 15.
pin 4 on steering harness down-
2. If continuity is NOT found, replace
shift / upshift switch connector X-
steering control harness (WP
C4 (WP 0018, Figure 58) and pin
0178). Ensure all harness connec-
30 on powertrain ECM connector
tors are reconnected. Verify cor-
X-C3 (WP 0018, Figure 3).
rect operation of machine (TM 5-
2410-241-10).
15. Using a digital multimeter (WP
1. If continuity is found, proceed to
0296), test for continuity between
step 16.
pin 3 on steering harness down-
2. If continuity is NOT found, replace
shift / upshift switch connector X-
steering control harness (WP
C4 (WP 0018, Figure 58) and pin
0178). Ensure all harness connec-
31 on powertrain ECM connector
tors are reconnected. Verify cor-
X-C3 (WP 0018, Figure 3).
rect operation of machine (TM 5-
2410-241-10).
16. Using a digital multimeter (WP
1.
If continuity is NOT found, proceed
0296), test for continuity between
to step 17.
pin 31 on powertrain ECM connec- 2.
If continuity is found, replace
tor X-C3 (WP 0018, Figure 3) and
steering control harness (WP
all other pins in powertrain ECM
0178). Ensure all harness connec-
connector X-C3 (WP 0018,
tors are reconnected. Verify cor-
Figure 3).
rect operation of machine (TM 5-
2410-241-10).
0020-111
