TM 5-3805-293-23-1
0018
Table 1. Transmission Code (1326-02 to 1408-13) Troubleshooting Procedures - Continued.
CDI FMI CODE
TEST OR INSPECTION
CORRECTIVE ACTION
1407-03 Transmission Sole-
System Response:
noid 7 Voltage Above Nor-
ECM will log a diagnostic code and a
mal
warning will appear on the messenger
while the diagnostic code is Active.
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 for Shorted Rear
Chassis Wiring Harness.
1. Connect MSD (WP 0006). Select
Trans/chassis 120M and verify
1407-03 is active.
2. Turn ignition switch and battery
disconnect switch to the OFF
position.
3. Disconnect the transmission har-
ness connector T-C3 (WP 0009,
Figure 180) from transmission
clutch modulating valve 7 (WP
0009, Figure 181) (WP 0155).
4. Disconnect the rear chassis wir-
ing harness connector FA-C20
(WP 0009, Figure 113) from trans-
mission ECM J1 (WP 0009, Fig-
ure 112).
5. Using digital multimeter, test for
Continuity - Proceed to Test Step 2.
continuity between rear chassis
No Continuity - Transmission ECM
wiring harness connector FA-C20
faulty, replace transmission ECM (WP
(WP 0009, Figure 113) terminal
0137).
48, and all other FA-C20 termi-
Connect transmission harness con-
nals, and machine ground. There
nector T-C3 (WP 0009, Figure 180) to
should be no continuity.
transmission clutch modulating valve
7 (WP 0009, Figure 181) (WP 0155).
Proceed to step 6.
