TM 5-3805-293-23-1
0016
Table 1. Transmission Code (0041-03 to 0444-06) Troubleshooting Procedures - Continued.
CDI FMI CODE
TEST OR INSPECTION
CORRECTIVE ACTION
0420-05 Secondary Steering
9. Using digital multimeter, test for
Continuity - Replace transmission
Relay Current Below Nor-
continuity between harness con-
ECM (WP 0137).
mal - Continued
nector FA-C20 (WP 0009, Figure
Connect secondary steering relay har-
113) terminal 4 and secondary
ness connector FA-C50 (WP 0009,
steering relay harness connector
Figure 126) to secondary steering
FA-C50 (WP 0009, Figure 126)
relay (WP 0009, Figure 125) (WP
terminal 2.
0189).
Resistance should be less than 5.0
Proceed to step 10.
ohms.
No Continuity - Replace rear chassis
wiring harness (WP 0188).
Proceed to step 10.
10. Using MSD (WP 0006), select
0420-05 Code Active - Repeat trou-
Trans/Chassis 120M ECM and
bleshooting code from the beginning.
verify 0420-05 is active.
0420-05 Code Not Active - Trouble-
shooting complete.
0420-06 Secondary Steering System Response:
Relay Current Above Normal Backup alarm will not operate.
ECM will log diagnostic code.
N OT E
Always inspect the harness connectorsthat are involved in the circuit.
Poor connections can often be the cause of a problem in an electrical
circuit. Verify that all connections in the circuit are clean and secure,
and that all connections are in good condition. If a problem with a
connection is found, correct the problem and verify that this diagnostic
code is active before performing this procedure.
Perform open or short circuit test ateach harness connection to identify
correct harness to replace.
Perform this test only if condition is active.
Test Step 1. Test Relay Control.
1. Connect MSD (WP 0006). Select
Trans/Chassis 120M ECM and
verify 0420-06 is active.
2. Turn ignition switch to the OFF
position.
3. Disconnect harness connector
FA-C50 (WP 0009, Figure 126)
from secondary steering relay
(WP 0009, Figure 125) (WP
0168).
4. Disconnect harness connector
FA-C21 (WP 0009, Figure 124)
from transmission ECM (WP
0009, Figure 112) (WP 0137).