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7B-38 AUTOMATIC TRANSMISSION (4 A/T)
DTC P0720 (DTC NO. 31) OUTPUT SHAFT SPEED SENSOR CIRCUIT MALFUNCTION
1. Output shaft speed sensor (A/T VSS)
2. Coupler
3. Shield wire
DTC DETECTING CONDITION
• Output shaft speed sensor signal voltage too high or too low.
Step
1
1) Turn ignition switch OFF and disconnect
output shaft speed sensor – input shaft
speed sensor coupler. (See figure.)
2) Measure the resistance between terminals
of disconnected sensor side coupler.
Is it 160 – 200 Ω?
(See figure.)
2
1) Connect output shaft speed sensor coupler
then disconnect TCM couplers.
2) Measure resistance between terminal "C43-
6" and "C43-14" of disconnected harness
side coupler.
Is it 160 – 200 Ω?
(See figure.)
4. TCM
5. TCM coupler (viewed from harness side)
Action
Yes
Go to Step 2.
Go to Step 3.
No
Replace output shaft
speed sensor.
"WHT" or "BLK" wire open
or shorted each other.
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