TM 5-2410-241-23-1
0021
Table 2. Chassis Troubleshooting Procedures - Continued.
0021
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
490-4 Hydraulic Lockout
1. Connect MSD (WP 0016). Select
1. If active 490-4 code is present,
Solenoid Voltage Below
CAT Monitoring System D7R
proceed to step 2.
Normal
ECM and check for Diagnostic
2. If no active codes are present,
Codes or Event Codes (WP
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. Remove right platform access
panel (WP 0213).
4. Disconnect RH console harness
hydraulic lockout switch connec-
tor RW-C7 (WP 0018, Figure 89)
from hydraulic lockout switch
(WP 0018, Figure 91). (WP 0208).
5. Ensure hydraulic lockout switch is
in LOCKED (Figure 3, Item 2)
position.
6. Using digital multimeter (WP
1. If continuity is found, replace
0296), test for continuity between
hydraulic lockout switch
pin 4 and 5 on hydraulic lockout
(WP 0208). Ensure all harness
switch (WP 0018, Figure 91)
connectors are reconnected. Ver-
ify correct operation of machine
(TM 5-2410-241-10).
2. If continuity is NOT found, pro-
ceed to step 7.
7. Ensure hydraulic lockout switch is
in LOCKED (Figure 3, Item 2)
position.
8. Using digital multimeter (WP
1. If continuity is NOT found, replace
0296), test for continuity between
hydraulic lockout switch
pin 5 and 6 on hydraulic lockout
(WP 0208). Ensure all harness
switch (WP 0018, Figure 91).
connectors are reconnected. Ver-
ify correct operation of machine
(TM 5-2410-241-10).
2. If continuity is found, proceed to
step 9.
9. Change hydraulic lockout switch
to UNLOCKED (Figure 3, Item 1)
position.