TM 5-3805-298-23-1
0066
Table 1. 1834 Ignition Key Switch Circuit Diagnostic Codes - Continued.
066
CID FMI CODE
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 6. Test Ignition Voltage
1834-2 Ignition Key Switch
Supply Circuit for Short to Ground.
Circuit Voltage Erratic,
1. Disconnect connector C-C61
Intermittent, or Incorrect -
(WP 0012, Figure 36) from ignition
Continued
switch (WP 0254).
2. Using a digital multimeter, test for
Continuity - Replace ignition switch
continuity between ignition switch
(WP 0254).
(WP 0012, Figure 37) terminal 1
Install new Monitoring/Key fuse
and ignition switch housing, and to
(TM 5-3805-298-10).
machine ground.
Proceed to Test Step 9.
No Continuity - Proceed to step 3.
3. Using a digital multimeter, test for
Continuity - Replace ignition switch
continuity between ignition switch
(WP 0254).
(WP 0012, Figure 37) terminal 4
Install new Monitoring/Key fuse
and ignition switch housing, and to
(TM 5-3805-298-10).
machine ground.
Proceed to Test Step 9.
No Continuity - Proceed to step 4.
4. Position fuse panel aside and
disconnect connector C-C34
(WP 0012, Figure 231) from main
relay magnetic switch (WP 0260).
5. Disconnect connector EN-C1
(WP 0012, Figure 11) from engine
ECM (WP 0265).
6. Disconnect connector C-C56
(WP 0012, Figure 46) from
instrument cluster (WP 0252).
7. Disconnect connector C-C12
(WP 0012, Figure 26) from
transmission ECM (WP 0266).
8. Using a digital multimeter, test for
Continuity - Proceed to step 9.
continuity between C-C61
No Continuity - Replace main relay
(WP 0012, Figure 36) terminal 1
magnetic switch (WP 0260).
and machine ground.
Install new Monitoring/Key fuse
(TM 5-3805-298-10).
Proceed to Test Step 9.
9. Remove right lower cab access
panels (WP 0347).
10. Disconnect connector C-C19
(WP 0012, Figure 23) from
connector EN-C8 (WP 0012,
Figure 22).
0066-6
