TM 10-3930-675-24-1
ENGINE TPS AND IDLE VALIDATION SWITCH TROUBLESHOOTING - CONTINUED
0009 00
Table 3. Error Code 1431 - Voltage Detected at Both Idle Validation
Signal Circuits Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 1431 - Voltage Detected at Both Idle 11.Check
for
continuity. a. If continuity at any one wire is
Validation Signal Circuits - Continued.
Disconnect connector X16 and
not found, replace engine and
the OEM harness connector.
transmission wiring harness
Check continuity of wires 166,
(WP 0113 00).
167, and 168 (WP 0048 00- b. Perform voltage check in step
11).
9 again.
c. Replace ECU (794) (WP 0080
00) if step 9 voltage check
fails.
12.Check
for
continuity. a. Repair or replace damaged
Disconnect connector X16 and
connector (WP 0113 00).
inspect for damage. Check b. Replace any damaged, open, or
continuity and for continuity to
grounded wires.
ground for wires A166, A167,
and A168 (WP 0048 00-11).
13.Check
for
continuity.
If there is continuity between pin
Disconnect the OEM harness
3 or pin 13 and any other pin in
connector and connector X16.
the OEM harness connector,
Check for continuity on the
replace the engine and
OEM
harness
connector
transmission wiring harness (WP
between pin 3 and all of the
0113 00).
other pins in the connector.
Check continuity between pin
13 and all of the other pins in
the connector. There should
not be continuity between pins.
>100K OHMS
>100K OHMS
0009 00-18
