TM 10-3930-675-20-1
0008 00-28
ENGINE TPS AND IDLE VALIDATION SWITCH TROUBLESHOOTING - CONTINUED
0008 00
Table 5. Error Code 1551 - Idle Validation Switch Circuit Failure Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 1551 - Idle Validation Switch Circuit
Failure - Continued
4. Place ignition switch to OFF
position and disconnect OEM
harness connector from engine
ECU and disconnect harness
from throttle position sensor
690 connector (X690).
a. Inspect harness and engine
ECU connector for dirty,
corroded,
bent,
broken,
pushed back, and extended
pins.
Clean and repair connector(s) as
required (WP 0111 00).
b. Check harness and engine
ECU for dirt or moisture in
or on connector and for
missing
or
damaged
connector seals.
Remove dirt and moisture from
connector. Replace missing or
damaged connector seals (WP
0111 00).
5. Place ignition switch to OFF
position. Disconnect OEM
harness connector from engine
ECU.
Disconnect
sensor
harness connector from engine
ECU.
a. Measure resistance from pin
3 of harness connector to all
other pins in connector.
Resistance should be greater
than 100k ohms.
If harness requires replacement,
notify SRA.
b. Measure resistance from pin
13 of harness connector to all
other pins in connector.
Resistance should be greater
than 100k ohms.
If harness requires replacement,
notify SRA.
>100K OHMS
>100K OHMS
USE TEST LEAD KIT P/N 3822758