Drivetrain. Corolla. Zre142 Aze141
U341E Automatic Transmission Transaxle. Corolla. Zre142 Aze141
Automatic Transaxle System -- Problem Symptoms Table |
- HINT:
- If a normal code is displayed during the diagnostic trouble code check although the trouble still occurs, check the electrical circuits for each symptom in the order given in the charts on the following pages and proceed to the page given for troubleshooting.
- The Matrix Chart is divided into 2 chapters.
- When the circuit on which mark *1 is attached is a malfunction, DTC could be output.
Refer to the table below when the trouble cause is considered to be electrical. If the instruction PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE is given in the flowchart of each circuit, inspect the suspected areas in descending order for each symptom. If the trouble still occurs even though there are no abnormalities in the inspections listed for the symptoms, check and replace the ECM.
| Symptom | Suspected Area | See page |
| No up-shift (A particular gear, from 1st to 3rd gear, is not up-shifted) | ECM | COROLLA_ZRE142 RM000000UZ30C8X.html |
| ECM | COROLLA_ZRE142 RM000000UZ30C8X.html | |
| No down-shift (4th to 3rd) | Transmission control switch circuit*1 | COROLLA_ZRE142 RM000000W840W9X.html |
| ECM | COROLLA_ZRE142 RM000000UZ30C8X.html | |
| No down-shift (A particular gear, from 3rd to 1st gear, is not down-shifted) | ECM | COROLLA_ZRE142 RM000000UZ30C8X.html |
| No lock-up or No lock-up off | Stop light switch circuit*1 | COROLLA_ZRE142 RM0000015W005PX.html |
| Engine coolant temp. sensor circuit*1 (for 2ZR-FE) | COROLLA_ZRE142 RM000000PDF0G8X.html | |
| ECM | COROLLA_ZRE142 RM000000UZ30C8X.html | |
| Shift point too high or too low | Throttle position sensor circuit*1 (for 2ZR-FE) | COROLLA_ZRE142 RM000000PDF0G8X.html |
| Engine coolant temp. sensor circuit*1 (for 2ZR-FE) | COROLLA_ZRE142 RM000000PDF0G8X.html | |
| ECM | COROLLA_ZRE142 RM000000UZ30C8X.html | |
| Up-shift to 4th from 3rd while shift lever is 3 position | Transmission control switch circuit*1 | COROLLA_ZRE142 RM000000W840W9X.html |
| ECM | COROLLA_ZRE142 RM000000UZ30C8X.html | |
| Up-shift to 4th from 3rd while engine is cold | Engine coolant temp. sensor circuit*1 (for 2ZR-FE) | COROLLA_ZRE142 RM000000PDF0G8X.html |
| ECM | COROLLA_ZRE142 RM000000UZ30C8X.html | |
| Harsh engagement (N to D) | ECM | COROLLA_ZRE142 RM000000UZ30C8X.html |
| Harsh engagement (Lock-up) | ECM | COROLLA_ZRE142 RM000000UZ30C8X.html |
| Harsh engagement (Any driving position) | ECM | COROLLA_ZRE142 RM000000UZ30C8X.html |
| Poor acceleration | ECM | COROLLA_ZRE142 RM000000UZ30C8X.html |
| Engine stalls when starting off or stopping | ECM | COROLLA_ZRE142 RM000000UZ30C8X.html |
| No kick-down | ECM | COROLLA_ZRE142 RM000000UZ30C8X.html |
| Malfunction in shifting | Park/neutral position switch circuit*1 | COROLLA_ZRE142 RM000000W840W9X.html |
| ECM | COROLLA_ZRE142 RM000000UZ30C8X.html |