TM 5-3805-296-23-2
0072
Table 1. 1277 Apron Raise Proportional Solenoid Diagnostic Codes Continued.
072
CID FMI
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 5. Test for Shorted Main
1277-06 Apron Raise
Cab Wiring Harness.
Solenoid Current Above
1. Disconnect connector W-C13
Normal Continued
(WP 0012, Figure 89) from
transmission/chassis ECM.
2. Disconnect connector W-C12
(WP 0012, Figure 88) from
transmission/chassis ECM.
3. Using digital multimeter
Continuity Replace main cab wiring
(WP 0540), test for continuity
harness (WP 0505).
between connector W-C3
Proceed to Test Step 6.
terminal 9 (WP 0012, Figure 139)
No Continuity Proceed to step 4.
and all other terminals
in connector W-C3
(WP 0012, Figure 139).
4. Using digital multimeter
Continuity Replace main cab wiring
(WP 0540), test for continuity
harness (WP 0505).
between connector W-C13
Proceed to Test Step 6.
terminal 4 (WP 0012, Figure 89)
No Continuity Proceed to step 5.
and all other terminals
in connector W-C13
(WP 0012, Figure 89).
5. Using digital multimeter
Continuity Replace main cab wiring
(WP 0540), test for continuity
harness (WP 0505).
between connector W-C13
Proceed to Test Step 6.
terminal 4 (WP 0012, Figure 89)
No Continuity Proceed to step 6.
and all terminals in connector
W-C12 (WP 0012, Figure 88).
6. Using digital multimeter
Continuity Replace main cab wiring
(WP 0540), test for continuity
harness (WP 0505).
between connector W-C13
Proceed to Test Step 6.
terminal 4 (WP 0012, Figure 89)
No Continuity Replace transmission/
and ground.
chassis ECM (WP 0495).
Proceed to Test Step 6.
Test Step 6. Verify Malfunction is
Resolved.
1. Ensure all harness connectors are
connected.
2. Turn battery disconnect switch and
ignition switch to ON position
(TM 5-3805-296-10).
3. At MSD, check for active
1277-6 Apron Raise Solenoid
diagnostic codes (WP 0008).
Current Above Normal Becomes
Inactive Proceed to step 4.
1277-6 Apron Raise Solenoid
Current Above Normal Remains
Active Repeat troubleshooting from
the beginning.
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