2008 INFINITI FX35 Brake

TROUBLE DIAGNOSISAT-91
< SERVICE INFORMATION >
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DTC WORK SUPPORT MODE
Display Items List
Diagnosis Procedure without CONSULT-IIIINFOID:0000000001327164
OBD-II SELF-DIAGNOSTIC PROCEDURE (WITH GST)
Refer to EC-125, "Generic Scan Tool (GST) Function" (for VQ35DE) or EC-704, "Generic Scan Tool (GST)
Function" (for VK45DE).
OBD-II SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)
Refer to EC-71, "Malfunction Indicator Lamp (MIL)" (for VQ35DE) or EC-649, "Malfunction Indicator Lamp
(MIL)" (for VK45DE).
TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)
Description
When the ignition switch is turned ON, the indicator la mp lights up for 2 seconds. As a method for locating the
suspect circuit, when the self-diagnostics start signal is input, the memory for the malfunction location is output
and the A/T CHECK indicator lamp flashes to display the corresponding DTC.
Diagnostic Procedure
Voltage (V) — — Displays the value measured by the voltage
probe.
Frequency (Hz) — —
The value measured by the pulse probe is dis-
played.
DUTY-HI (high) (%) — —
DUTY-LOW (low) (%) — —
PLS WIDTH-HI (ms) — —
PLS WIDTH-LOW (ms) — — Monitored item (Unit)
Select Monitor Item
Remarks
ECU IN-
PUT SIG- NALS MAIN SIG-
NALS SELEC-
TION
FROM
MENU
DTC work support item Description Check item
1ST GR FUNCTN P0731 Following items for “1st gear function” can be confirmed.
 Self-diagnosis status (whether the diagnosis is being performed
or not)
 Self-diagnostic results (OK or NG)
 Input clutch solenoid valve
 Front brake solenoid valve
 Direct clutch solenoid valve
 High and low reverse clutch solenoid valve
 Each clutch
 Hydraulic control circuit
2ND GR FUNCTN P0732
Following items for “2nd gear function” can be confirmed.
 Self-diagnosis status (whether the diagnosis is being performed
or not)
 Self-diagnostic results (OK or NG)
3RD GR FUNCTN P0733 Following items for “3rd gear function” can be confirmed.
 Self-diagnosis status (whether the diagnosis is being performed
or not)
 Self-diagnostic results (OK or NG)
4TH GR FUNCTN P0734 Following items for “4th gear function” can be confirmed.
 Self-diagnosis status (whether the diagnosis is being performed
or not)
 Self-diagnostic results (OK or NG)
5TH GR FUNCTN P0735 Following items for “5th gear function” can be confirmed.
 Self-diagnosis status (whether the diagnosis is being performed
or not)
 Self-diagnostic results (OK or NG)
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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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AT-114
< SERVICE INFORMATION >
DTC P0731 A/T 1ST GEAR FUNCTION
DTC P0731 A/T 1ST GEAR FUNCTION
DescriptionINFOID:0000000001375112
This malfunction is detected when the A/T does not shift into 1st gear position as instructed by TCM. This is
not only caused by electrical malfunction (circuits open or shorted) but also by mechanical malfunction such
as control valve sticking, improper solenoid valve operation.
On Board Diagn osis LogicINFOID:0000000001375113
Diagnostic trouble code “P0731 A/T 1ST GR FNCTN” with CONSULT-III or 18th judgment flicker without CON-
SULT-III is detected when TCM detects any inconsistency in the actual gear ratio.
Possible CauseINFOID:0000000001375114
 Harness or connectors
(Solenoid circuits are open or shorted.)
 Input clutch solenoid valve
 Front brake solenoid valve
 Direct clutch solenoid valve
 High and low reverse clutch solenoid valve
 Each clutch
 Hydraulic control circuit
DTC Confirmation ProcedureINFOID:0000000001375115
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, alw ays turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following proc edure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Start the engine and select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
2. Make sure that “ATF TEMP 1” is within the following range. ATF TEMP 1: 20 °C – 140 °C
If out of range, drive vehicle to warm ATF or stop engine to cool ATF.
3. Select “1ST GR FNCTN P0731” of “DTC WORK SUPPORT” mode for “TRANSMISSION” with CON-
SULT-III.
4. Drive vehicle and maintain the following conditions.
VEHICLE SPEED: 10 km/h (6 MPH) or more
ACCELE POSI: 0.6/8 or more
ENGINE SPEED: TURBINE REV − 50 rpm or more
TURBINE REV: 300 rpm or more
GEAR: “1” position
MANU MODE SW: ON
5. Keep the current driving status for at least 5 consecutive seconds if CONSULT-III screen changes from
“OUT OF CONDITION” to “TESTING”.
CAUTION:
If “TESTING” does not ap pear on CONSULT-III for a long ti me, select “SELF-DIAG RESULTS”. In
case a 1st trip DTC other than P0731 is shown, refer to “ AT-84, "
CONSULT-III Function (TRANSMIS-
SION)"”.
If “COMPLETED RESULT NG” is detected, go to AT-115, "
Diagnosis Procedure".
If “STOP VEHICLE” is detect ed, go to the following step.
6. Stop vehicle.
7. Drive vehicle in “D” position allowing it to shift fr om 1st to 5th gear and check shift timing and shift shock.
- Touch “OK” to complete the inspection when normally shifted from the 1st to 5th gear.
- Touch “NG” when an unusual shift shock, etc. occurs in spite of shifting from the 1st to 5th gear. Go to AT-
49, "Inspections Before Trouble Diagnosis".
- Perform AT-84, "
CONSULT-III Function (TRANSMISSION)" when not shifted from the 1st to 5th gear.
(Neither “OK” nor “NG” are indicated.)
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AT-116
< SERVICE INFORMATION >
DTC P0732 A/T 2ND GEAR FUNCTION
DTC P0732 A/T 2ND GEAR FUNCTION
DescriptionINFOID:0000000001375117
This malfunction is detected when the A/T does not shift into 2nd gear position as instructed by TCM. This is
not only caused by electrical malfunction (circuits open or shorted) but also by mechanical malfunction such
as control valve sticking, improper solenoid valve operation.
On Board Diagn osis LogicINFOID:0000000001375118
Diagnostic trouble code “P0732 A/T 2ND GR FNCTN” wit h CONSULT-III or 19th judgment flicker without
CONSULT-III is detected when TCM detects any inconsistency in the actual gear ratio.
Possible CauseINFOID:0000000001375119
 Harness or connectors
(Solenoid circuits are open or shorted.)
 Input clutch solenoid valve
 Front brake solenoid valve
 Direct clutch solenoid valve
 High and low reverse clutch solenoid valve
 Each clutch
 Hydraulic control circuit
DTC Confirmation ProcedureINFOID:0000000001375120
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, alw ays turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following proc edure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Start the engine and select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
2. Make sure that “ATF TEMP 1” is within the following range. ATF TEMP 1: 20 °C – 140 °C
If out of range, drive vehicle to warm ATF or stop engine to cool ATF.
3. Select “2ND GR FNCTN P0732” of “DTC WORK SUPPORT” mode for “TRANSMISSION” with CON-
SULT-III.
4. Drive vehicle and maintain the following conditions.
VEHICLE SPEED: 10 km/h (6 MPH) or more
ACCELE POSI: 0.6/8 or more
ENGINE SPEED: TURBINE REV − 50 rpm or more
TURBINE REV: 300 rpm or more
GEAR: “2” position
MANU MODE SW: ON
5. Keep the current driving status for at least 5 consecutive seconds if CONSULT-III screen changes from
“OUT OF CONDITION” to “TESTING”.
CAUTION:
If “TESTING” does not ap pear on CONSULT-III for a long ti me, select “SELF-DIAG RESULTS”. In
case a 1st trip DTC other than P0732 is shown, refer to “ AT-84, "
CONSULT-III Function (TRANSMIS-
SION)"”.
If “COMPLETED RESULT NG” is detected, go to AT-117, "
Diagnosis Procedure".
If “STOP VEHICLE” is detect ed, go to the following step.
6. Stop vehicle.
7. Drive vehicle in “D” position allowing it to shift fr om 1st to 5th gear and check shift timing and shift shock.
- Touch “OK” to complete the inspection when normally shifted from the 1st to 5th gear.
- Touch “NG” when an unusual shift shock, etc. occurs in spite of shifting from the 1st to 5th gear. Go to AT-
49, "Inspections Before Trouble Diagnosis".
- Perform AT-84, "
CONSULT-III Function (TRANSMISSION)" when not shifted from the 1st to 5th gear.
(Neither “OK” nor “NG” are indicated.)
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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AT-118
< SERVICE INFORMATION >
DTC P0733 A/T 3RD GEAR FUNCTION
DTC P0733 A/T 3RD GEAR FUNCTION
DescriptionINFOID:0000000001375122
This malfunction is detected when the A/T does not shift into 3rd gear position as instructed by TCM. This is
not only caused by electrical malfunction (circuits open or shorted) but also by mechanical malfunction such
as control valve sticking, improper solenoid valve operation.
On Board Diagn osis LogicINFOID:0000000001375123
Diagnostic trouble code “P0733 A/T 3RD GR FNCTN” wit h CONSULT-III or 20th judgment flicker without
CONSULT-III is detected when TCM detects any inconsistency in the actual gear ratio.
Possible CauseINFOID:0000000001375124
 Harness or connectors
(Solenoid circuits are open or shorted.)
 Input clutch solenoid valve
 Front brake solenoid valve
 Direct clutch solenoid valve
 High and low reverse clutch solenoid valve
 Each clutch
 Hydraulic control circuit
DTC Confirmation ProcedureINFOID:0000000001375125
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, alw ays turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following proc edure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Start the engine and select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
2. Make sure that “ATF TEMP 1” is within the following range. ATF TEMP 1: 20 °C – 140 °C
If out of range, drive vehicle to warm ATF or stop engine to cool ATF.
3. Select “3RD GR FNCTN P0733” of “DTC WORK SUPPORT” mode for “TRANSMISSION” with CON-
SULT-III.
4. Drive vehicle and maintain the following conditions.
VEHICLE SPEED: 10 km/h (6 MPH) or more
ACCELE POSI: 0.6/8 or more
ENGINE SPEED: TURBINE REV − 50 rpm or more
TURBINE REV: 300 rpm or more
GEAR: “3” position
MANU MODE SW: ON
5. Keep the current driving status for at least 5 consecutive seconds if CONSULT-III screen changes from
“OUT OF CONDITION” to “TESTING”.
CAUTION:
If “TESTING” does not ap pear on CONSULT-III for a long ti me, select “SELF-DIAG RESULTS”. In
case a 1st trip DTC other than P0732 is shown, refer to “ AT-84, "
CONSULT-III Function (TRANSMIS-
SION)"”.
If “COMPLETED RESULT NG” is detected, go to AT-119, "
Diagnosis Procedure".
If “STOP VEHICLE” is detect ed, go to the following step.
6. Stop vehicle.
7. Drive vehicle in “D” position allowing it to shift fr om 1st to 5th gear and check shift timing and shift shock.
- Touch “OK” to complete the inspection when normally shifted from the 1st to 5th gear.
- Touch “NG” when an unusual shift shock, etc. occurs in spite of shifting from the 1st to 5th gear. Go to AT-
49, "Inspections Before Trouble Diagnosis".
- Perform AT-84, "
CONSULT-III Function (TRANSMISSION)" when not shifted from the 1st to 5th gear.
(Neither “OK” nor “NG” are indicated.)
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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AT-120
< SERVICE INFORMATION >
DTC P0734 A/T 4TH GEAR FUNCTION
DTC P0734 A/T 4TH GEAR FUNCTION
DescriptionINFOID:0000000001375127
This malfunction is detected when the A/T does not shift into 4th gear position as instructed by TCM. This is
not only caused by electrical malfunction (circuits open or shorted) but also by mechanical malfunction such
as control valve sticking, improper solenoid valve operation.
On Board Diagn osis LogicINFOID:0000000001375128
Diagnostic trouble code “P0734 A/T 4TH GR FNCTN” with CONSULT-III or 21st judgment flicker without CON-
SULT-III is detected when TCM detects any inconsistency in the actual gear ratio.
Possible CauseINFOID:0000000001375129
 Harness or connectors
(Solenoid circuits are open or shorted.)
 Input clutch solenoid valve
 Front brake solenoid valve
 Direct clutch solenoid valve
 High and low reverse clutch solenoid valve
 Each clutch
 Hydraulic control circuit
DTC Confirmation ProcedureINFOID:0000000001375130
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, alw ays turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following proc edure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Start the engine and select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
2. Make sure that “ATF TEMP 1” is within the following range. ATF TEMP 1: 20 °C – 140 °C
If out of range, drive vehicle to warm ATF or stop engine to cool ATF.
3. Select “4TH GR FNCTN P0734” of “DTC WORK SUPPORT” mode for “TRANSMISSION” with CON-
SULT-III.
4. Drive vehicle and maintain the following conditions.
VEHICLE SPEED: 10 km/h (6 MPH) or more
ACCELE POSI: 0.6/8 or more
ENGINE SPEED: TURBINE REV − 50 rpm or more
TURBINE REV: 300 rpm or more
GEAR: “4” position
MANU MODE SW: ON
5. Keep the current driving status for at least 5 consecutive seconds if CONSULT-III screen changes from
“OUT OF CONDITION” to “TESTING”.
CAUTION:
If “TESTING” does not ap pear on CONSULT-III for a long ti me, select “SELF-DIAG RESULTS”. In
case a 1st trip DTC other than P0734 is shown, refer to “ AT-84, "
CONSULT-III Function (TRANSMIS-
SION)"”.
If “COMPLETED RESULT NG” is detected, go to AT-121, "
Diagnosis Procedure".
If “STOP VEHICLE” is detect ed, go to the following step.
6. Stop vehicle.
7. Drive vehicle in “D” position allowing it to shift fr om 1st to 5th gear and check shift timing and shift shock.
- Touch “OK” to complete the inspection when normally shifted from the 1st to 5th gear.
- Touch “NG” when an unusual shift shock, etc. occurs in spite of shifting from the 1st to 5th gear. Go to AT-
49, "Inspections Before Trouble Diagnosis".
- Perform AT-84, "
CONSULT-III Function (TRANSMISSION)" when not shifted from the 1st to 5th gear.
(Neither “OK” nor “NG” are indicated.)
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AT-122
< SERVICE INFORMATION >
DTC P0735 A/T 5TH GEAR FUNCTION
DTC P0735 A/T 5TH GEAR FUNCTION
DescriptionINFOID:0000000001375132
This malfunction is detected when the A/T does not shift into 5th gear position as instructed by TCM. This is
not only caused by electrical malfunction (circuits open or shorted) but also by mechanical malfunction such
as control valve sticking, improper solenoid valve operation.
On Board Diagn osis LogicINFOID:0000000001375133
Diagnostic trouble code “P0735 A/T 5TH GR FNCTN” wit h CONSULT-III or 22nd judgment flicker without
CONSULT-III is detected when TCM detects any inconsistency in the actual gear ratio.
Possible CauseINFOID:0000000001375134
 Harness or connectors
(Solenoid circuits are open or shorted.)
 Input clutch solenoid valve
 Front brake solenoid valve
 Direct clutch solenoid valve
 High and low reverse clutch solenoid valve
 Each clutch
 Hydraulic control circuit
DTC Confirmation ProcedureINFOID:0000000001375135
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, alw ays turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following proc edure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Start the engine and select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
2. Make sure that “ATF TEMP 1” is within the following range. ATF TEMP 1: 20 °C – 140 °C
If out of range, drive vehicle to warm ATF or stop engine to cool ATF.
3. Select “5TH GR FNCTN P0735” of “DTC WORK SUPPORT” mode for “TRANSMISSION” with CON-
SULT-III.
4. Drive vehicle and maintain the following conditions.
VEHICLE SPEED: 10 km/h (6 MPH) or more
ACCELE POSI: 0.6/8 or more
ENGINE SPEED: TURBINE REV − 50 rpm or more
TURBINE REV: 300 rpm or more
GEAR: “5” position
MANU MODE SW: ON
5. Keep the current driving status for at least 5 consecutive seconds if CONSULT-III screen changes from
“OUT OF CONDITION” to “TESTING”.
CAUTION:
If “TESTING” does not ap pear on CONSULT-III for a long ti me, select “SELF-DIAG RESULTS”. In
case a 1st trip DTC other than P0735 is shown, refer to “ AT-84, "
CONSULT-III Function (TRANSMIS-
SION)"”.
If “COMPLETED RESULT NG” is detected, go to AT-123, "
Diagnosis Procedure".
If “STOP VEHICLE” is detect ed, go to the following step.
6. Stop vehicle.
7. Drive vehicle in “D” position allowing it to shift fr om 1st to 5th gear and check shift timing and shift shock.
- Touch “OK” to complete the inspection when normally shifted from the 1st to 5th gear.
- Touch “NG” when an unusual shift shock, etc. occurs in spite of shifting from the 1st to 5th gear. Go to AT-
49, "Inspections Before Trouble Diagnosis".
- Perform AT-84, "
CONSULT-III Function (TRANSMISSION)" when not shifted from the 1st to 5th gear.
(Neither “OK” nor “NG” are indicated.)
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DTC P1730 A/T INTERLOCKAT-139
< SERVICE INFORMATION >
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DTC P1730 A/T INTERLOCK
DescriptionINFOID:0000000001327247
Fail-safe function to detect interlock conditions.
On Board Diagnosis LogicINFOID:0000000001327248
Diagnostic trouble code “P1730 A/T INTERLOCK” with CO NSULT-III or 12th judgement flicker without CON-
SULT-III is detected when TCM does not receive t he proper voltage signal from the sensor and switch.
TCM monitors and compares gear position and conditions of each ATF pressure switch when gear is steady.
Possible CauseINFOID:0000000001327249
 Harness or connectors
(Solenoid and switch circuit is open or shorted.)
 Low coast brake solenoid valve
 ATF pressure switch 2
DTC Confirmation ProcedureINFOID:0000000001327250
NOTE:
If “DTC Confirmation Procedure” has been previously performed, alw ays turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON.
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3. Touch “START”.
4. Start engine.
5. Drive vehicle and maintain the following conditions for at least 2 consecutive seconds. SLCT LVR POSI: “D” position
6. If DTC is detected, go to AT-139, "
Diagnosis Procedure".
WITH GST
Follow the procedure “WITH CONSULT-III”.
Judgement of A/T InterlockINFOID:0000000001327251
 When A/T Interlock is judged to be malfunctioning, the vehicle should be fixed in 2nd gear, and should be set
in a condition in which it can travel.
When one of the following fastening patterns is dete cted, the fail-safe function in correspondence with the
individual pattern should be performed.
NOTE:
When the vehicle is driven fixed in 2nd gear, a turbine revolution sensor malfunction is displayed, but
this is not a turbine r evolution sensor malfunction.
 When interlock is detected at the 3rd gear or more, it is locked at the 2nd gear.
Diagnosis ProcedureINFOID:0000000001327252
1.SELF-DIAGNOSIS
With CONSULT-III
1. Drive vehicle.
2. Stop vehicle and turn ignition switch OFF.
3. Turn ignition switch ON.
4. Select “SELF-DIAG RESULTS” mode for “TRANSMISSION” with CONSULT-III.
Without CONSULT-III
1. Drive vehicle.
2. Stop vehicle and turn ignition switch OFF.
3. Turn ignition switch ON.
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