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
0420-03 Secondary Steering
3. Disconnect harness connector
Relay Voltage Above Nor-
FA-C50 (WP 0009, Figure 126)
mal - Continued
from secondary steering relay
(WP 0009, Figure 125) (WP
0188).
4. Disconnect harness connector
FA-C21 (WP 0009, Figure 124)
from transmission ECM J2 (WP
0009, Figure 112) (WP 0137).
5. Using digital multimeter, test for
Continuity - Replace rear chassis
continuity between harness con-
wiring harness (WP 0188).
nector FA-C21 (WP 0009, Figure
Proceed to step 6.
124) terminal 2 and all other ter-
No Continuity - Replace transmis-
minals on harness connector FA-
sion ECM (WP 0137).
C21. There should be no continu-
Connect harness connector FA-C50
ity.
(WP 0009, Figure 126) to secondary
steering relay (WP 0009, Figure 125)
(WP 0188).
Proceed to step 6.
6. Using MSD (WP 0006), select
0420-03 Code Active - Repeat trou-
Trans/Chassis 120M ECM and
bleshooting code from the beginning.
verify 0420-03 is active.
0420-03 Code Not Active - Trouble-
shooting complete.
0420-05 Secondary Steering System Response:
Relay Current Below Normal Secondary steering 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 0420-05 is active.
2. Turn ignition switch to the OFF
position.
