Make Toyota Model 4A - FE
1. Flash/Blink Codes
1.1 Find a engine that you have the workshop manual with the correct procedure and codes to diagnose the flash codes
1.3 Using the workshop manual follow the procedure to extract the codes, explain briefly what is the procedure.
1 : 24 2: 31 3: 41
We found there codes tab faulty in this exccersise, and we connect a jumper wire across ( short cut) TE1 and E1, so the flushing light was 2, 4, 3, 1, and 4, 1 there these codes are 24, 31, and 41, and these codes matches the codes on the engine manual 41 TPS, 31 Vacuum Sensor, and 24 IAT
2 Trouble codes or fault codes
find where the codes are listed
2.2 Record any codes, and what system and condition they describe in the chart below.
| Code number | System affected | Condition described |
| 24 | IAT | Loose plug (poor connection) |
| 31 | VS circuit | Loose plug (poor connection) |
| 41 | TPS | Loose Plug (poor connection) |
3. Visual Inspection to find fault
3.2 Describe the problem you found:
Poor connections, loose plugs, in all there.
4. Repair fault
4.1 plug back in the connector , or repair problem found, describe what you did:
We have loosed and put them back in had stopped flashing.
5. Clear codes
Describe what you did to clear the codes:
I have removed the ECU fuse in the fuse box abut 10 seconds and cleared the codes.
6. Recheck for codes and record codes in system now:
Recheck for codes and found 1, 1,1,1 flushing continually, it means these flushing are normal.
7 How could the faults fund affect the engine performance?
these faults will effect the engine performance the engine will run either rich and lean it means the fuel ratio has been affected and the result was black smoke. Ie ; high Hc or unburnt fuel.
8 Discuss what other test you should be doing once you have found the fault codes:
I would test them for wire having voltage drop test for earth or grounding each of these component.
Note: I had take picture for this exsccirsice , un fortunately deleted for my mobile phone.
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