TM 5-3805-298-23-1
0062
Table 1. 549 Throttle Lock Mode Switch Diagnostic Codes - Continued.
062
CID FMI CODE
TEST OR INSPECTION
CORRECTIVE ACTION
549-2 Throttle Lock Mode
Test Step 6. Test for Shorted Engine
Switch Data Is Erratic,
Wiring Harness.
1. Remove right engine access panel
Intermittent, or Incorrect -
(WP 0348).
Continued
2. Disconnect connector EN-C1
(WP 0012, Figure 11) from engine
ECM J2.
3. Using digital multimeter
Continuity - Replace engine wiring
(WP 0174), test for continuity
harness (WP 0299).
between connector EN-C1
Proceed to Test Step 7.
(WP 0012, Figure 11) terminal 52
No Continuity - Proceed to step 4.
and all other EN-C1 terminals.
4. Using digital multimeter
Continuity - Replace engine wiring
(WP 0174), test for continuity
harness (WP 0299).
between connector EN-C1
Proceed to Test Step 7.
(WP 0012, Figure 11) terminal 52
No Continuity - Replace engine ECM
and ground.
(WP 0265).
Proceed to Test Step 7.
Test Step 7. Verify Malfunction Is
Resolved.
1. Ensure all wiring harness
connectors are connected.
2. Ensure right engine access panel
is installed (WP 0348).
3. Ensure right lower cab access
panels are installed (WP 0347).
4. Start engine or attempt to start
engine (TM 5-3805-298-10).
5. At MSD, check for active
Diagnostic Code 549-2 Throttle Lock
diagnostic codes (WP 0008).
Mode Switch Data Is Erratic,
Intermittent, or Incorrect Becomes
Inactive - Troubleshooting complete.
Diagnostic Code 549-2 Throttle Lock
Mode Switch Data Is Erratic,
Intermittent, or Incorrect Remains
Active - Repeat troubleshooting from
the beginning.
END OF WORK PACKAGE
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