Ignition "OFF"
Disconnect the "ATF TEMPERATURE SENSOR" connector
Measure the resistance between terminals "1" and "2" of the "ATF TEMPERATURE SENSOR".
Specification : Refer to " Reference data"
[Reference data]
TEMP.(℉) | RESISTANCE(kΩ) | TEMP.(℉) | RESISTANCE(kΩ) |
-40(-40℉) | 139.5 | 80(176℉) | 1.08 |
-20(-4℉) | 47.7 | 100(212℉) | 0.63 |
0(32℉) | 18.6 | 120(248℉) | 0.38 |
20(68℉) | 8.1 | 140(284℉) | 0.25 |
40(104℉) | 3.8 | 160(320℉) | 0.16 |
60(140℉) | 1.98 |
Is resistance within specifications?
YES
Go to "CHECK PCM/TCM " as below
NO
Replace ATF TEMPERATURE SENSOR as necessary and Go to "Verification Vehicle Repair" procedure.
Ignition "ON" & Engine "OFF".
Connect "ATF TEMPERATURE SENSOR" connector.
Install scantool and slect a SIMU-SCAN,
Simulate voltage (0→5V) to ATF TEMPERATURE SENSOR signal circuit.
Is ATF TEMPERATURE SENSOR signal value changed according to simulation voltage?
YES
Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.
NO
Substitute with a known-good PCM/TCM and check for proper operation. If the problem is corrected, replace PCM/TCM and then go to "Verification of Vehicle Repair" procedure.
