Page 165 of 3924

AT-92
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
1.CHECK A/T CHECK INDICATOR LAMP
1. Start the engine with selector lever in “P” pos ition. Warm engine to normal operating temperature.
2. Turn ignition switch ON and OFF at least twice, then leave it in the OFF position.
3. Wait 10 seconds.
4. Turn ignition switch ON. (Do not start engine.)
Does A/T CHECK indicator lamp come on for about 2 seconds?
YES >> GO TO 2.
NO >> Go to AT-170, "
A/T Check Indicator Lamp Does Not Come On".
2.JUDGEMENT PROCEDURE
1. Turn ignition switch OFF.
2. Keep pressing shift lock release button.
3. Move selector lever from “P” to “D” position.
4. Release accelerator pedal. (Set the closed throttle position signal ON.)
5. Depress brake pedal. (Stop lamp switch signal ON.)
6. Turn ignition switch ON. (Do not start engine.)
7. Wait 3 seconds.
8. Move the selector lever to the manual shift gate side. (Manual mode signal ON.)
9. Release brake pedal. (Stop lamp switch signal OFF.)
10. Move the selector lever to “D” position. (Manual mode signal OFF.)
11. Depress brake pedal. (Stop lamp switch signal ON.)
12. Release brake pedal. (Stop lamp switch signal OFF.)
13. Depress accelerator pedal fully and release it.
>> GO TO 3.
3.CHECK SELF-DIAGNOSIS CODE
Check A/T CHECK indicator lamp. Refer to "Judgement Self-diagnosis Code".
If the system does not go into self-diagnostics. Refer to AT-102
, AT-155, AT-164, AT-165.
>> DIAGNOSIS END
Judgement Self-diagnosis Code
If there is a malfunction, the lamp lights up fo r the time corresponding to the suspect circuit.
No. Malfunctioning item No. Malfunctioning item
1 Revolution sensor AT- 1 0 8
12 A/T interlock AT- 1 3 9
2 Direct clutch solenoid valve AT- 1 4 713 A/T 1st engine braking AT-141
3 Torque converter clutch solenoid valve AT- 1 2 4, AT- 1 2 614 Start signal AT- 9 7
4 Line pressure solenoid valve AT- 1 2 815 Accelerator pedal position sensor AT- 1 3 0
5 Input clutch solenoid valve AT- 1 4 316 Engine speed signal AT- 11 2
6 Front brake solenoid valve AT- 1 4 517 CAN communication line AT- 9 4
7 Low coast brake solenoid valve AT- 1 5 1, AT- 1 5 318 1st gear function AT- 11 4
8 High and low reverse clutch solenoid valve AT- 1 4 919 2nd gear function AT- 11 6
9 PNP switch AT- 1 0 220 3rd gear function AT- 11 8
10 A/T fluid temperature sensor AT-13221 4th gear function AT- 1 2 0
11 Turbine revolution sensor AT- 1 0 622 5th gear function AT- 1 2 2
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Page 213 of 3924
AT-140
< SERVICE INFORMATION >
DTC P1730 A/T INTERLOCK
4. Perform self-diagnosis. Refer to AT-91, "Diagnosis Procedure without CONSULT-III".
OK or NG
OK >> GO TO 2.
NG >> Check low coast brake solenoid valve circuit and function. Refer to AT-151
, AT-153.
2.CHECK DTC
Perform AT-139, "
DTC Confirmation Procedure".
OK or NG
OK >> INSPECTION END
NG >> GO TO 3.
3.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to AT-160
.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4.DETECT MALFUNCTIONING ITEM
Check A/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> Replace the control valve with TCM. Refer to AT-215, "Control Valve with TCM and A/T Fluid Tem-
perature Sensor 2".
NG >> Repair or replace damaged parts.
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Page 215 of 3924

AT-142
< SERVICE INFORMATION >
DTC P1731 A/T 1ST ENGINE BRAKING
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to AT-160
.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.DETECT MALFUNCTIONING ITEM
Check A/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> Replace the control valve with TCM. Refer to AT-215, "Control Valve with TCM and A/T Fluid Tem-
perature Sensor 2".
NG >> Repair or replace damaged parts.
4.CHECK DTC
Perform AT-141, "
DTC Confirmation Procedure".
OK or NG
OK >> INSPECTION END
NG >> GO TO 2.
Item name Condition Display value
ON OFF SOL Low coast brake engaged. Refer to
AT- 1 8
.ON
Low coast brake disengaged. Refer to AT- 1 8
.OFF
ATF PRES SW 2 Low coast brake engaged. Refer to
AT- 1 8
.ON
Low coast brake disengaged. Refer to AT- 1 8
.OFF
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Page 219 of 3924

AT-146
< SERVICE INFORMATION >
DTC P1757 FRONT BRAKE SOLENOID VALVE
4. Read out the value of “FR/B SOLENOID” while driving.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to AT-160
.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.DETECT MALFUNCTIONING ITEM
Check A/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> Replace the control valve with TCM. Refer to AT-215, "Control Valve with TCM and A/T Fluid Tem-
perature Sensor 2".
NG >> Repair or replace damaged parts.
4.CHECK DTC
Perform AT-106, "
DTC Confirmation Procedure".
OK or NG
OK >> INSPECTION END
NG >> GO TO 2.
Item name Condition Display value (Approx.)
FR/B SOLENOID Front brake engaged. Refer to
AT- 1 8
. 0.6 - 0.8 A
Front brake disengaged. Refer to AT- 1 8
. 0 - 0.05 A
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Page 225 of 3924
AT-152
< SERVICE INFORMATION >
DTC P1772 LOW COAST BRAKE SOLENOID VALVE
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to AT-160
.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.DETECT MALFUNCTIONING ITEM
Check A/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> Replace the control valve with TCM. Refer to AT-215, "Control Valve with TCM and A/T Fluid Tem-
perature Sensor 2".
NG >> Repair or replace damaged parts.
4.CHECK DTC
Perform AT-151, "
DTC Confirmation Procedure".
OK or NG
OK >> INSPECTION END
NG >> GO TO 2.
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Page 227 of 3924

AT-154
< SERVICE INFORMATION >
DTC P1774 LOW COAST BRAKE SOLENOID VALVE FUNCTION
With CONSULT-III
1. Start engine.
2. Select “SELECTION FROM MENU” in “DATA MONI TOR” mode for “TRANSMISSION” with CONSULT-III.
3. Drive vehicle in the manual mode (1st or 2nd gear), and confirm the ON/OFF actuation of the “ATF PRES
SW 2” and “ON OFF SOL”.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to AT-160
.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.DETECT MALFUNCTIONING ITEM
Check A/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> Replace the control valve with TCM. Refer to AT-215, "Control Valve with TCM and A/T Fluid Tem-
perature Sensor 2".
NG >> Repair or replace damaged parts.
4.CHECK DTC
Perform AT-153, "
DTC Confirmation Procedure".
OK or NG
OK >> INSPECTION END
NG >> GO TO 2.
Item name Condition Display value
ON OFF SOL Low coast brake engaged. Refer to
AT- 1 8
.ON
Low coast brake disengaged. Refer to AT- 1 8
.OFF
ATF PRES SW 2 Low coast brake engaged. Refer to
AT- 1 8
.ON
Low coast brake disengaged. Refer to AT- 1 8
.OFF
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Page 249 of 3924

AT-176
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS FOR SYMPTOMS
Check the A/T position. Refer to AT-207, "Checking of A/T Position".
OK or NG
OK >> GO TO 3.
NG >> Adjust A/T position. Refer to AT-207, "
Adjustment of A/T
Position".
3.CHECK A/T FLUID LEVEL
Check A/T fluid level. Refer to AT- 11 , "
Checking A/T Fluid".
OK or NG
OK >> GO TO 4.
NG >> Refill ATF.
4.CHECK STALL TEST
Check stall revolution with selector lever in “M” and “R” positions.
Refer to AT-49, "
Inspections Before Trouble Diagnosis".
OK or NG
OK >> GO TO 6.
OK in “M” position, NG in “R” position>>GO TO 5
NG in both “M” and “R” positions>>GO TO 8.
5.DETECT MALFUNCTIONING ITEM
1. Disassemble A/T. Refer to AT-267
.
2. Check the following.
- Reverse brake. Refer to AT-267
.
OK or NG
OK >> GO TO 9.
NG >> Repair or replace damaged parts.
6.CHECK LINE PRESSURE
Check the line pressure with the engine idling. Refer to AT-49,
"Inspections Before Trouble Diagnosis".
OK or NG
OK >> GO TO 9.
NG-1 >> Line pressure high: GO TO 7.
NG-2 >> Line pressure low: GO TO 8.
SCIA2119E
SAT638A
SAT493G
SAT494G
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Page 275 of 3924

AT-202
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS FOR SYMPTOMS
2. Check A/T fluid condition. Refer to AT-49, "Inspections Before
Trouble Diagnosis".
OK or NG
OK >> GO TO 6.
NG >> GO TO 9.
6.DETECT MALFUNCTIONING ITEM
Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to AT-59,
"Symptom Chart" (Symptom No.50).
OK or NG
OK >> GO TO 7.
NG >> Repair or replace damaged parts.
7.CHECK SYMPTOM
Check again. Refer to AT-53, "
Road Test".
OK or NG
OK >> INSPECTION END
NG >> GO TO 8.
8.CHECK TCM
1. Check TCM input/output signals. Refer to AT-83, "
TCM Input/Output Signal Reference Value".
2. If NG, recheck A/T assembly harness connector terminals for damage or loose connection with harness
connector.
OK or NG
OK >> INSPECTION END
NG >> Repair or replace damaged parts.
9.DETECT MALFUNCTIONING ITEM
Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to AT-59,
"Symptom Chart" (Symptom No.50).
OK or NG
OK >> GO TO 7.
NG >> Repair or replace damaged parts.
Vehicle Does Not Decele rate by Engine BrakeINFOID:0000000001327382
SYMPTOM:
No engine brake is applied when the gear is shifted from the 2nd to 1st gear.
DIAGNOSTIC PROCEDURE
1.CHECK SELF-DIAGNOSTIC RESULTS
With CONSULT-III
Perform self-diagnosis.
Without CONSULT-III
Perform self-diagnosis. Refer to AT-91, "
Diagnosis Procedure without CONSULT-III".
Is any malfunction detected by self-diagnostic results?
YES >> Check the malfunctioning system. Refer to AT-84, "CONSULT-III Function (TRANSMISSION)",
AT-91, "
Diagnosis Procedure without CONSULT-III".
NO >> GO TO 2.
SCIA5199E
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