TM 5-3805-298-23-1
0070
Table 1. 2771 Throttle Hold Set/Accel Switch Diagnostic Codes - Continued.
070
CID FMI CODE
TEST OR INSPECTION
CORRECTIVE ACTION
3. Using digital multimeter
Continuity - Replace engine wiring
2771-3 Throttle Lock Set/
(WP 0174), test for continuity
harness (WP 0299).
Accel Switch Voltage Above
between connector EN-C1
Normal - Continued
Proceed to Test Step 5.
(WP 0012, Figure 11) terminal 50
No Continuity - Replace engine ECM
and all other EN-C1 terminals.
(WP 0265).
Proceed to Test Step 5.
Test Step 5. 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. Ensure console instrument panel
is installed (WP 0264).
5. Start engine (TM 5-3805-298-10).
6. At MSD, check for active
Diagnostic Code 2771-3 Throttle
diagnostic codes (WP 0008).
Lock Set/Accel Switch Voltage
Above Normal Becomes Inactive -
Troubleshooting complete.
2771-3 Throttle Lock Set/Accel
Switch Voltage Above Normal
Remains Active - Repeat
troubleshooting from the beginning.
NOTE
2771-4 Throttle Lock Set/
Accel Switch Voltage Below
Always inspect wiring harness connectors that are involved in the circuit.
Normal
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 the
connection is found, correct the problem and verify that this malfunction
or diagnostic code is active before performing this procedure.
Perform open or short-circuit test at each wiring harness connection to
identify the correct wiring harness to replace.
Tag all wiring harnesses to aid in installation.
Perform this test only if condition is active.
