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 9. Test Lower Cab Wiring
91-12 Throttle Position
Harness for High Resistance or
Sensor Is Damaged -
Open.
Continued
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 10. Test Ground Circuit
Function in Engine Wiring Harness.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-298-10).
2. Remove right engine access panel
(WP 0348).
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 A and
terminal B.
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 43
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).
0049-18