Circuit Test STO
NOTE:
Enter this test only if so instructed by CIRCUIT TEST STI
.
STO CIRCUIT PIN IDENTIFICATION
| Application | 4EAT Pin | ECA Pin | Wire Color | |||
|---|---|---|---|---|---|---|
| 2.2L | ||||||
| Non-Turbo | 1F | (1) | White/Black | |||
| Turbo | 1C | (1) | Red | |||
| 3.0L | 1C | (1) | Red | |||
|
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- Checking System Integrity Install 4EAT Tester (007-00037), and leave 4EAT module (ECA on 2.2L non-turbo) disconnected. Measure resistance between STO test pin and STO diagnostic connector terminal. See STO CIRCUIT PIN IDENTIFICATION table. See Fig 1 . If resistance is greater than 5 ohms, repair circuit between 4EAT module (ECA for 2.2L non-turbo) and STO diagnostic connector. If resistance is less than 5 ohms, go to step 2.
- Measure resistance between STO test pin and all other test pins. If resistance between STO test pin and any other test pin is less than 5 ohms, circuit is shorted. Repair as necessary. If resistance between STO test pin and all other test pins is greater than 5 ohms, go to CIRCUIT TEST PGC .