Isuzu Trooper 1999 Workshop Manual page 1503

7A1–50 TRANSMISSION CONTROL SYSTEM (4L30–E)
DTC P0722 Transmission Output Speed Sensor (OSS) Low Input (Cont'd)
Step
14 Repair the open in circuit WHT.
Is the repair complete?
15 Check circuit RED for a short to ground or open.
Was a problem found and corrected?
16 Repair the short to B+ in circuit RED.
Is the repair complete?
17 Replace the PCM. Refer to Powertrain Control Module (PCM) in
automatic Transmission (4L30–E) section.
Is the replacement complete?
18 1. After the repair is complete, use the scan tool to select "DTC",
then "Clear Info" function and operate the vehicle under the
following conditions:
Transmission output speed is greater than 101 rpm for 3
seconds.
2. Review the scan tool "DTC Info".
Has the last test failed or is the current DTC displayed?
Action Yes
Go to Step 18
Go to Step 18 Go to Step 17
Go to Step 18
Go to Step 18
Begin diagnosis
again
Repair verified
Go to Step 1
Exit DTC table
No
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