AT-252
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — INTRODUCTION
DIAGNOSTIC WORKSHEET
Information from Customer
KEY POINTS
WHAT..... Vehicle & A/T model
WHEN..... Date, Frequencies
WHERE..... Road conditions
HOW..... Operating conditions, Symptoms
Customer name MR/MS Model & Year VIN
Trans. model Engine Mileage
Incident Date Manuf. Date In Service Date
Frequency❏ Continuous❏ Intermittent ( times a day)
Symptoms❏ Vehicle does not move. (❏ Any position❏ Particular position)
❏ No up-shift (❏ 1st → 2nd❏ 2nd → 3rd❏ 3rd → O/D)
❏ No down-shift (❏ O/D → 3rd❏ 3rd → 2nd❏ 2nd → 1st)
❏ Lockup malfunction
❏ Shift point too high or too low.
❏ Shift shock or slip (❏ N → D❏ Lockup❏ Any drive position)
❏ Noise or vibration
❏ No kick down
❏ No pattern select
❏ Others
()
O/D OFF indicator lamp Blinks for about 8 seconds.
❏ Continuously lit❏ Not lit
AT-272
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
5. CHECK LOCK-UP (D4 TO D4 L/U)
Check lock-up (D
4 to D4 L/U).
Specified speed when lock-up occurs. Refer to AT- 5 3 0 , "
VEHICLE SPEED WHEN PERFORMING LOCK-UP"
.
Read vehicle speed, throttle opening when lock-up duty
becomes 94%. Refer to AT- 2 4 4 , "
DATA MONITOR MODE (A/T)" .
Does A/T perform lock-up at the specified speed?
YES >> GO TO 6.
NO >>
Mark the box on the DIAGNOSTIC WORKSHEET.
GO TO AT- 3 11 , "A/T Does Not Perform Lock-up" .
Continue “Road Test”.
6. CHECK HOLD LOCK-UP
Continue Road Test.
When lock-up duty becomes 94%. Refer to AT- 2 4 4 , "
DATA MONITOR MODE (A/T)" .
Does A/T hold lock-up condition for more than 30 seconds?
YES >> GO TO 7.
NO >>
Mark the box on the DIAGNOSTIC WORKSHEET.
GO TO AT- 3 1 2 , "A/T Does Not Hold Lock-up Condition" .
Continue “Road Test”.
7. CHECK SHIFT DOWN (D4 L/U TO D4 )
Release accelerator pedal.
When lock-up duty becomes 4%. Refer to AT- 2 4 4 , "
DATA
MONITOR MODE (A/T)" .
Is lock-up released when accelerator pedal is released?
YES >> GO TO 8.
NO >>
Mark the box on the DIAGNOSTIC WORKSHEET.
GO TO AT- 3 1 4 , "Lock-up Is Not Released" .
Continue “Road Test”.
8. CHECK SHIFT DOWN (D4 TO D3 )
Decelerate vehicle by applying foot brake lightly.
Read gear position and engine speed. Refer to AT- 2 4 4 ,
"DATA MONITOR MODE (A/T)" .
Does engine speed return to idle smoothly when A/T is shifted from
D4 to D3 ?
YES >> 1. Stop vehicle.
2. GO TO AT- 2 7 3 , "
Cruise Test — Part 2" .
NO >>
Mark the box on the DIAGNOSTIC WORKSHEET.
GO TO AT- 3 1 5 , "Engine Speed Does Not Return To
Idle (Light Braking D4 → D3 )" .
Continue “Road Test”.
SAT957I
SAT958I
SAT959I
CAN COMMUNICATION LINE
AT-329
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[ALL]CAN COMMUNICATION LINEPFP:31940
DescriptionECS004UJ
CAN (Control Area Network) is a serial communication line for real time application. It is an on-vehicle multi-
plex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
On Board Diagnosis LogicECS004UK
Possible CauseECS00CT9
Harness or connector
(CAN communication line is open or shorted.)
DTC Confirmation ProcedureECS004UL
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Wait at least 6 seconds or start engine and wait for at least 6
seconds.
4. If DTC is detected, go to AT- 3 3 1 , "
Diagnostic Procedure" .
WITHOUT CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Wait at least 6 seconds or start engine and wait at least 6 sec-
onds.
3. Perform self-diagnosis.
Refer to AT- 5 2 , "
Diagnostic Procedure Without CONSULT-II" .
4. If DTC is detected, go to AT- 3 3 1 , "
Diagnostic Procedure" .
Diagnostic trouble code Malfunction is detected when... Check items (Possible cause)
: CAN COMM CIRCUIT
When a malfunction is detected in CAN
communication line.
Harness or connectors
(CAN communication line is open or
shorted.)
: 11th judgement flicker
SAT014K
SCIA4673E
AT-332
[ALL]
VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)
VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)PFP:32702
DescriptionECS004TJ
The revolution sensor detects the revolution of the idler gear parking
pawl lock gear and emits a pulse signal. The pulse signal is sent to
the TCM which converts it into vehicle speed.
CONSULT-II Reference ValueECS00CS5
Remarks: Specification data are reference values.
On Board Diagnosis LogicECS00CS6
Possible CauseECS00CS7
Check the following items.
Harness or connector
(The sensor circuit is open or shorted.)
Revolution sensor
DTC Confirmation ProcedureECS00CS8
CAUTION:
Always drive vehicle at a safe speed.
Be careful not to rev engine into the red zone on the tachometer.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always 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-II
1. Turn ignition switch ON and select “DATA MONITOR” mode for
“A/T” with CONSULT-II.
SCIA0715E
Monitor item Condition Display value
VHCL/S SE·A/T (km/h) During driving Approximately matches the speedometer
reading.
Diagnostic trouble code Malfunction is detected when... Check items (Possible cause)
: VHCL SPEED SEN·AT
TCM does not receive the proper voltage
signal from the sensor.
Harness or connectors
(The sensor circuit is open or shorted.)
Revolution sensor
: 1st judgement flicker
SAT014K
VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)
AT-333
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2. Drive vehicle and check for an increase of “VHCL/S SE·MTR” value.
If the check result is NG, go to AT- 3 3 5 , "
Diagnostic Procedure" .
If the check result is OK, go to following step.
3. Select “DATA MONITOR” mode for “A/T” with CONSULT-II.
4. Start engine and maintain the following conditions for at least 5
consecutive seconds.
VHCL SPEED SE: 30 km/h (19 MPH) or more
THRTL POS SEN: More than 1.2V
SLCT LVR POSI: D position
Driving location: Driving the vehicle uphill (increased
engine load) will help maintain the driving conditions
required for this test.
If the check result is NG, go to AT- 3 3 5 , "
Diagnostic Procedure" .
If the check result is OK, go to following step.
5. Maintain the following conditions for at least 5 consecutive sec-
onds.
ENGINE SPEED: 3,500 rpm or more
THRTL POS SEN: More than 1.2V
SLCT LVR POSI: D position
Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving
conditions required for this test.
WITHOUT CONSULT-II
1. Start engine.
2. Drive vehicle under the following conditions for more than 5 sec-
onds.
Selector lever position: D position
Vehicle speed: 30 km/h (19 MPH) or more
Throttle position: greater than 1.0/8 of the full throttle posi-
tion
3. Perform self-diagnosis.
Refer to AT- 2 4 6 , "
Diagnostic Procedure Without CONSULT-II" .
4. If the check result is NG, go to AT- 3 3 5 , "
Diagnostic Procedure" .
SCIA5358E
SAT014K
SCIA5591E
DTC VEHICLE SPEED SENSOR MTR
AT-339
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DTC VEHICLE SPEED SENSOR MTRPFP:24814
DescriptionECS004TM
The vehicle speed sensor·MTR is built into the speedometer assem-
bly. The sensor functions as an auxiliary device to the revolution sen-
sor when it is malfunctioning. The TCM will then use a signal sent
from the vehicle speed sensor·MTR.
CONSULT-II Reference ValueECS00CSH
Remarks: Specification data are reference values.
On Board Diagnosis LogicECS00CSA
Possible CauseECS00CSB
Check the following items.
Harness or connector
(The sensor circuit is open or shorted.)
Vehicle speed sensor
DTC Confirmation ProcedureECS00CSC
After the repair, perform the following procedure to confirm the malfunction is eliminated.
CAUTION:
Always drive vehicle at a safe speed.
If performing this “DTC Confirmation Procedure” again, always turn ignition switch OFF and wait
at least 10 seconds before continuing.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode for
“A/T” with CONSULT-II.
SCIA0716E
Monitor item Condition Display value
VHCL/S SE·MTR (km/h) During driving Approximately matches the speedometer
reading.
Diagnostic trouble code Malfunction is detected when... Check items (Possible cause)
: VHCL SPEED SEN·MTR
TCM does not receive the proper voltage
signal from the sensor.
Harness or connectors
(The sensor circuit is open or shorted.)
Combination meter
4WD/ABS control unit : 2nd judgement flicker
SAT014K
ACCELE RATOR PEDAL POSITION (APP) SENSOR
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ACCELE RATOR PEDAL POSITION (APP) SENSORPFP:22620
DescriptionECS004TP
Accelerator pedal position (APP) sensor
Electric throttle control actuator consists of throttle control motor,
acceleration pedal position sensor, throttle position sensor, etc.
The actuator sends a signal to the ECM.
CONSULT-II REFERENCE VALUE
Remarks: Specification data are reference values.
On Board Diagnosis LogicECS00CSD
*:This code means Accelerator pedal position (APP) sensor in reality.
Possible CauseECS00CSE
Harness or connector
(The sensor circuit is open or shorted.)
DTC Confirmation ProcedureECS00CSF
After the repair, perform the following procedure to confirm the malfunction is eliminated.
CAUTION:
Always drive vehicle at a safe speed.
If performing this “DTC Confirmation Procedure” again, always turn ignition switch OFF and wait
at least 10 seconds before continuing.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always 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-II
1. Turn ignition switch ON and select “DATA MONITOR” mode for “A/T” with CONSULT-II.
2. Touch “TCM INPUT SIGNALS”.
3. Touch “START”
If the check result is NG, go to AT- 3 4 8 , "
Diagnostic Procedure" .
If the check result is OK, go to following step.
PBIB0498E
Monitor item Condition Specification
Accelerator pedal position (APP) sensor
(THRTL POS SEN)Fully-closed throttle Approximately 0.5V
Fully-open throttle Approximately 4V
Diagnostic trouble code Malfunction is detected when... Check items (Possible cause)
: THROTTLE POSI SEN*
TCM receives an excessively low or high
voltage from the sensor.
Harness or connectors
(The sensor circuit is open or shorted.)
Accelerator pedal position (APP) sensor
: 3rd judgement flicker
Accelerator pedal condition THRTL POS SEN
Fully released Approx. 0.5V
Partially depressed 0.5 - 4V
Fully depressed Approx. 4V
SAT014K
AT-346
[ALL]
ACCELE RATOR PEDAL POSITION (APP) SENSOR
4. Turn ignition switch ON and select “DATA MONITOR” mode for
“A/T” with CONSULT-II.
5. Touch “SELECTION FROM MENU”
6. Touch “VHCL SPEED SE” and “THRTL POS SEN”.
Touch “START”.
7. Start engine and maintain the following conditions for at least 3
consecutive seconds. Then release accelerator pedal com-
pletely.
VHCL SPEED SE: 10 km/h (6 MPH) or more
THRTL POS SEN: Approximately 3V or less
SLCT LVR POSI: D position
If the check result is NG, go to AT- 3 4 8 , "
Diagnostic Procedure" .
If the check result is OK, go to following step.
8. Maintain the following conditions for at least 3 consecutive seconds. Then release accelerator pedal com-
pletely.
VHCL SPEED SE: 10 km/h (6 MPH) or more
THROTTLE POSI: 8.0/8
SLCT LVR POSI: D position
WITHOUT CONSULT-II
1. Start engine.
2. Drive vehicle under the following conditions for more than 3 seconds.
Selector lever position: D position
Vehicle speed: 10 km/h (6 MPH) or more
Throttle position: greater than 4.0/8 of the full throttle position
3. Perform self-diagnosis.
Refer to AT- 5 2 , "
Diagnostic Procedure Without CONSULT-II" .
4. If the check result is NG, go to AT- 3 4 8 , "
Diagnostic Procedure" .
SCIA5358E
SAT014K
SCIA5593E