TM 5-3805-298-23-1
0049
Table 1. 91 Throttle Position Sensor Diagnostic Codes - Continued.
049
CID FMI CODE
TEST OR INSPECTION
CORRECTIVE ACTION
NOTE
91-8 Throttle Position
Sensor Abnormal
Always inspect wiring harness connectors that are involved in the circuit.
Frequency, Pulse Width, or
Poor connections can often be the cause of a problem in an electrical
Period
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.
DIAGNOSTIC CODE SET CONDITION
Engine electronic control module (ECM) Detects Abnormal Frequency on
Throttle Signal Circuit F702.
POSSIBLE CAUSE
Governor Control Pedal Assembly.
Lower Cab Wiring Harness High Resistance or Open.
Engine Wiring Harness High Resistance or Open.
Throttle Position Sensor.
Engine ECM.
Test Step 1. Inspect Governor
Control Pedal Assembly.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-298-10).
2. Inspect governor control pedal
Pedal Assembly Components OK -
Proceed to Test Step 2.
assembly for loose, worn, missing,
and damaged components
Pedal Assembly Components
(WP 0226).
Loose, Worn, Missing, or Damaged -
Replace governor control pedal
assembly (WP 0226).
Proceed to Test Step 14.