INSPECTION
When any on-board diagnostics item is malfunctioning, the display on AT OIL TEMP warning light blinks from the time malfunction is detected after starting the engine until ignition switch is turned to OFF. The malfunctioning part or unit can be determined by a diagnostic trouble code (DTC) during on-board diagnostics operation. Problems which occurred previously can also be identified through the memory function. If the POWER indicator does not show a problem (although a problem is occurring), the problem can be determined by checking the performance characteristics of each sensor using select monitor. The indicator signal is as shown in the figure.
Scheme 557
Scheme 558
DIAGNOSIS
The AT OIL TEMP warning light circuit is open or shorted.
TROUBLE SYMPTOM
- When the ignition switch is turned to ON (engine OFF), AT OIL TEMP warning light does not illuminate.
- When the on-board diagnostics is performed, AT OIL TEMP warning light remains illuminated.
Scheme 559
Scheme 560
Scheme 561
Scheme 562
Scheme 563
Scheme 564
- Faulty harness connector
- Select monitor communication failure
Scheme 565
Scheme 566
Scheme 567
| DTC | Description |
|---|---|
| DTC 11 | ENGINE SPEED SIGNAL |
| DTC 27 | ATF TEMPERATURE SENSOR |
| DTC 31 | THROTTLE POSITION SENSOR |
| DTC 33 | FRONT VEHICLE SPEED SENSOR |
| DTC 36 | TORQUE CONVERTER TURBINE SPEED SENSOR |
| DTC 38 | TORQUE CONTROL SIGNAL |
| DTC 45 | INTAKE MANIFOLD PRESSURE SIGNAL |
| DTC 71 | SHIFT SOLENOID 1 |
| DTC 72 | SHIFT SOLENOID 2 |
| DTC 73 | LOW CLUTCH TIMING SOLENOID |
| DTC 74 | 2-4 BRAKE TIMING SOLENOID |
| DTC 75 | LINE PRESSURE DUTY SOLENOID |
| DTC 76 | 2-4 BRAKE DUTY SOLENOID |
| DTC 77 | LOCK-UP DUTY SOLENOID |
| DTC 79 | TRANSFER DUTY SOLENOID |
| DTC 93 | REAR VEHICLE SPEED SENSOR |
DIAGNOSTIC TROUBLE CODES (DTC) LIST
The engine speed input signal circuit is open or shorted.
- No lock-up (after engine warm-up).
- The AT OIL TEMP warning light remains on when vehicle speed is "0".
Scheme 568
Scheme 569
Scheme 570
The input signal circuit of TCM to ATF temperature sensor is open or shorted.
Excessive shift shock.
Scheme 571
Scheme 572
Scheme 573
Scheme 574
Scheme 575
The input signal circuit of throttle position sensor is open or shorted.
Shift point too high or too low; excessive shift shock; excessive tight corner "braking".
Scheme 576
Scheme 577
Scheme 578
Scheme 579
- The vehicle speed signal is abnormal.
- The circuit in combination meter is faulty.
- The harness connector between TCM and vehicle speed sensor is in short or open.
- Erroneous idling.
- Engine stalls.
- Poor driving performance.
Scheme 580
Scheme 581
Scheme 582
Scheme 583
The input signal circuit of TCM is open or shorted.
Excessive shift shock.
Scheme 584
Scheme 585
Scheme 586
- The signal circuit is open or shorted.
Excessive shift shock.
Scheme 587
Scheme 588
Scheme 589
The input signal circuit of TCM from ECM is open or shorted.
Excessive shift shock.
Scheme 590
Scheme 591
Scheme 592
The output signal circuit of shift solenoid 1 is open or shorted.
Does not shift.
Scheme 593
Scheme 594
Scheme 595
Scheme 596
The output signal circuit of shift solenoid 2 is open or shorted.
Does not shift.
Scheme 597
Scheme 598
Scheme 599
Scheme 600
The output signal circuit of low clutch timing solenoid is open or shorted.
Excessive shift shock.
Scheme 601
Scheme 602
Scheme 603
Scheme 604
The output signal circuit of 2-4 brake timing solenoid is open or shorted.
Excessive shift shock.
Scheme 605
Scheme 606
Scheme 607
Scheme 608
The output signal circuit of line pressure duty solenoid is open or shorted.
Excessive shift shock.
Scheme 609
Scheme 610
Scheme 611
Scheme 612
Scheme 613
The output signal circuit of 2-4 brake duty solenoid is open or shorted.
Excessive shift shock.
Scheme 614
Scheme 615
Scheme 616
Scheme 617
Scheme 618
The output signal circuit of lock-up duty solenoid is open or shorted.
No "lock-up" (after engine warm-up).
Scheme 619
Scheme 620
Scheme 621
Scheme 622
Scheme 623
The output signal circuit of transfer duty solenoid is open or shorted.
Excessive "braking" in tight corners.
Scheme 624
Scheme 625
Scheme 626
Scheme 627
Scheme 628
The input signal circuit of TCM is open or shorted.
No lock-up or excessive tight corner "braking".
Scheme 629
Scheme 630
Scheme 631
Scheme 632
Scheme 633
- The LED does not come on even if FWD switch is ON.
- The FWD switch circuit is open or short.
Scheme 634
Scheme 635
Scheme 636
Scheme 637
Scheme 638
Scheme 639
The input signal circuit of inhibitor switch is open or shorted.
- Shift characteristics are erroneous.
- Engine brake is not effected when selector lever is in "3" range.
- Engine brake is not effected when selector lever is in "2" range.
- Engine brake is not effected when selector lever is in "1" range.
