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
5. Using digital multimeter
91-8 Throttle Position
Resistance 5.0 Ohms or Less -
(WP 0174), measure resistance
Replace engine ECM (WP 0265).
Sensor Abnormal
between connector EN-C1
Frequency, Pulse Width, or
Proceed to Test Step 14.
(WP 0012, Figure 11) terminal 43
Period - Continued
Resistance Greater Than 5.0 Ohms -
and terminal 33.
Proceed to Test Step 11.
Test Step 11. Test Lower Cab Wiring
Harness for High Resistance or
Open.
1. Disconnect connector EN-C2
(WP 0012, Figure 12) from
connector C-C18 (WP 0012,
Figure 13).
2. Using digital multimeter
Resistance 5.0 Ohms or Less -
(WP 0174), measure resistance
Replace engine wiring harness
between connector C-C18
(WP 0299).
(WP 0012, Figure 13) terminal 15
Proceed to Test Step 14.
and terminal 19.
Resistance Greater Than 5.0 Ohms -
Replace lower cab wiring harness
(WP 0291).
Proceed to Test Step 14.
Test Step 12. Test Wiring Harness for
High Resistance or Open.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-298-10).
2. Remove right lower cab access
panels (WP 0347).
3. Disconnect connector EN-C1
(WP 0012, Figure 11) from engine
ECM J1.
4. Install a jumper wire between
connector C-C8 (WP 0012, Figure
14) terminal B and terminal C.
5. Using digital multimeter
Resistance 5.0 Ohms or Less -
(WP 0174), measure resistance
Replace engine ECM (WP 0265).
between connector EN-C1
Proceed to Test Step 14.
(WP 0012, Figure 11) terminal 53
Resistance Greater Than 5.0 Ohms -
and terminal 33.
Proceed to Test Step 13.
Test Step 13. Test Lower Cab Wiring
Harness for High Resistance or
Open.
1. Disconnect connector EN-C2
(WP 0012, Figure 12) from
connector C-C18 (WP 0012,
Figure 13).
0049-12