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
Test Step 2. Test for Shorted Throttle
91-4 Throttle Position Sen-
Position Sensor.
sor Signal Voltage Is Below
1. Turn ignition switch and battery
Normal or the Voltage Is
disconnect switch to OFF position
Shorted Low - Continued
(TM 5-3805-298-10).
2. Remove right lower cab access
panels (WP 0347).
3. Disconnect connector C-C8
(WP 0012, Figure 14) from throttle
position sensor.
4. Using MSD, check for active
91-4 Throttle Position Sensor Signal
diagnostic codes (WP 0008).
Voltage Is Below Normal Remains
Active - Proceed to Test Step 3.
91-4 Throttle Position Sensor Signal
Voltage Is Below Normal Becomes
Inactive - Replace governor control
pedal assembly (WP 0226).
Proceed to Test Step 5.
Test Step 3. Test for Shorted Lower
Cab Wiring Harness.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-298-10).
2. Disconnect connector EN-C2
(WP 0012, Figure 12) from
connector C-C18 (WP 0012,
Figure 13).
3. Using digital multimeter
Continuity - Replace lower cab wiring
(WP 0174), test for continuity
harness (WP 0291).
between connector C-C18
Proceed to Test Step 5.
(WP 0012, Figure 13) terminal 13
No Continuity - Proceed to step 4.
and terminal 19.
4. Using digital multimeter
Continuity - Replace lower cab wiring
(WP 0174), test for continuity
harness (WP 0291).
between connector C-C18
Proceed to Test Step 5.
(WP 0012, Figure 13) terminal 13
No Continuity - Proceed to Test Step 4.
and ground.
0049-5