2002 MAZDA 6 brake

K2–170
ON-BOARD DIAGNOSTIC
Diagnostic procedure
STEP INSPECTION ACTION
1VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
•Check for related Service Bulletins and/or on-
line repair information availability.
•Is any related repair information available?Yes Perform repair or diagnosis according to available repair
information.
•If vehicle is not repaired, go to next step.
No Go to next step.
2INSPECT TERMINAL COMPONENT NO.1 (12-
PIN) FOR POOR CONNECTION
•Turn ignition key to OFF.
•Disconnect terminal component No.1 (12-pin).
•Check for poor connection (damaged, pulled-
out, terminals, corrosion, etc.).
•Are terminals okay?Yes Go to next step.
No Repair or replace terminals, then go to Step 12.
3INSPECT RESISTANCE
•Check resistance between terminal component
No.1 (12-pin) terminal A (transaxle case side)
and body ground.
•Is resistance within 2.6—3.2 ohms?
(See K2–88 SOLENOID VALVE INSPECTION.)Yes Go to Step 8.
No Go to next step.
4INSPECT COUPLER COMPONENT (10-PIN)
FOR POOR CONNECTION
•Disconnect coupler component (10-pin)
connector.
•Check for poor connection (damaged, pulled-
out, terminals, corrosion, etc.).
•Is terminal okay?Yes Go to next step.
No Repair or replace terminal, then go to Step 12.
5INSPECT RESISTANCE
•Check resistance between coupler component
(10-pin) terminal D (part side) and body
ground.
•Is resistance within 2.6—3.2 ohms?
(See K2–88 SOLENOID VALVE INSPECTION.)Yes Repair or replace terminal component No.1 (12-pin), then
go to Step 12.
No Go to next step.
6INSPECT 2-4 BRAKE SOLENOID VALVE
CONNECTOR FOR POOR CONNECTION
•Disconnect 2-4 brake solenoid vale connector.
•Check for poor connection (damaged, pulled-
out, terminals, corrosion, etc.).
•Is terminal okay?Yes Go to next step.
No Repair or replace terminal, then go to Step 12.
7INSPECT RESISTANCE
•Check resistance between 2-4 brake solenoid
valve connector terminal A (part side) and body
ground.
•Is resistance within 2.6—3.2 ohms?
(See K2–88 SOLENOID VALVE INSPECTION.)Yes Repair or replace coupler component (10-pin), then go to
Step 12.
No Verify 2-4 brake solenoid valve installation.
•If 2-4 brake solenoid valve is installed correctly, replace
2-4 brake solenoid valve, then go to Step 12
(See K2–90 SOLENOID VALVE REMOVAL/
INSTALLATION.)
8INSPECT TCM CONNECTOR FOR POOR
CONNECTION
•Disconnect TCM connector.
•Check for poor connection (damaged, pulled-
out, terminals, corrosion, etc.).
•Are terminals okay?Yes Go to next step.
No Repair terminals, then go to Step 12.
9INSPECT TERMINAL COMPONENT NO.1 (12-
PIN) CIRCUIT FOR OPEN CIRCUIT
•Check continuity between TCM terminal 2V
(harness-side) and terminal component No.1
(12-pin) terminal A (harness-side).
•Is there continuity between terminals?Yes Go to next step.
No Repair or replace harness, then go to Step 12.
10INSPECT TERMINAL COMPONENT NO.1 (12-
PIN) CIRCUIT FOR SHORT TO POWER
•Turn ignition key to ON (engine OFF).
•Check voltage at terminal component No.1 (12-
pin) terminal A (harness-side).
•Is voltage 0 V?Yes Go to next step.
No Repair or replace harness, then go to Step 12.

K2–180
ON-BOARD DIAGNOSTIC
End Of SiePID/DATA MONITOR INSPECTIONA6E5770189012301. Connect the SSTs (WDS or equivalent) to the DLC-2.
2. Turn the ignition switch to ON.
3. Measure the PID value.
Note
•Perform part inspection for the output device after TCM inspection.
•The PID/DATA MONITOR function monitors the calculated value of the input/output signals in the TCM.
Therefore, if a monitored value of an output device is out of specification, it is necessary to inspect the
monitored value of the input device related to the output device control. Since an output device
malfunction is not directly indicated as a malfunction of the monitored value for the output device, it is
necessary to inspect the output device individually using the simulation function, etc.
PID/DATA MONITOR AND RECORD function table
10VERIFY AFTER REPAIR PROCEDURE
•Perform “After Repair Procedure”.
(See K2–124 AFTER REPAIR PROCEDURE.)
•Is there any DTC present?Yes Go to applicable DTC inspection.
No Troubleshooting completed. STEP INSPECTION ACTION
Monitor item
(Definition)Unit/
ConditionCondition/Specification ActionTCM
terminal
2-4 B Duty
(2-4 brake
solenoid vale)ON/OFFN position: ON
M range (1GR) stall: OFFInspect 2-4 brake solenoid valve.
(See K2–88 SOLENOID VALVE
INSPECTION.)2V
BOO
(Brake switch)ON/OFFBrake pedal depressed: ON
Other: OFFInspect brake switch.
1U
DWN_SW
(Down switch)ON/OFFDown sift at M range: ON
Other: OFFInspect selector lever component.
1S
GEAR
(Calculated
gear range in
TCM)1ST/2ND/
3RD/4TH/
5TH1GR: 1ST
2GR: 2ND
3GR: 3RD
4GR: 4TH
5GR: 5THInspect following PIDs: THOP, TSS
–
H/C Duty
(High clutch
solenoid valve)%N position: OFF
D range 1GR to 2GR shifting: ONInspect high clutch solenoid valve.
(See K2–88 SOLENOID VALVE
INSPECTION.)2U
LPS
(Pressure
control
solenoid)%Ignition switch ON: 0%
Idle: 0—100%Inspect pressure control solenoid.
(See K2–88 SOLENOID VALVE
INSPECTION.)2Y
MNL_SW
(M range
switch)ON/OFFM range: ON
Other: OFFInspect selector lever component.
1AA
NSFT TIM
(Neutral shift
solenoid valve)ON/OFFN position: OFF
R position inhibition control: ONInspect main relay.
(See T–19 RELAY INSPECTION.)
Inspect battery.
(See G–6 BATTERY INSPECTION.)2D
OSS
(Intermediate
sensorrpmIgnition switch ON: 0 rpm
Idle: 700—800 rpmInspect intermediate sensor.
(See K2–86 INTERMEDIATE SENSOR
INSPECTION.)1K, 1X
PNP
(TR switch (P/
N position
switch))ON/OFFP or N position: ON
R position and all ranges: OFFInspect TR switch.
(See K2–88 SOLENOID VALVE
INSPECTION.)–
RDCN TIM
(Reduction
timing solenoid
valve)ON/OFFN position: OFF
D range: ONInspect reduction timing solenoid valve.
(See K2–88 SOLENOID VALVE
INSPECTION.)2G
RPM
(Engine speed)rpmIgnition switch ON: 0 rpm
Idle: 700—800 rpmInspect TCM.
(See K2–90 TCM INSPECTION.)–
SSA/SS1
(Shift solenoid
A)ON/OFFN position: ON
D range 3GR: OFFInspect shift solenoid A.
(See K2–88 SOLENOID VALVE
INSPECTION.)–

TROUBLESHOOTING
K2–183
K2
AUTOMATIC TRANSAXLE SYMPTOM TROUBLESHOOTINGA6E578001030203Diagnostic Index
•Use the chart below to verify the symptoms of the trouble in order to diagnose the appropriate area.
No. TROUBLESHOOTING ITEM DESCRIPTION PAGE
1•Vehicle does not move in D range,
or in R position•Vehicle does not move when accelerator
pedal depressed.(See K2–188 NO.1 VEHICLE
DOES NOT MOVE IN D
RANGE, OR IN R POSITION.)
2•Vehicle moves in N position•Vehicle creeps in N position.
•Vehicle creeps if brake pedal not
depressed in N position.(See K2–188 NO.2 VEHICLE
MOVES IN N POSITION.)
3•Vehicle moves in P position, or
parking gear does not disengage
when P is disengaged•Vehicle rolls when on a downward slope
and tires do not lock in P position.
•Tires locked when P disengaged,
vehicle does not move in D range, and R
position when accelerator pedal
depressed, and engine remains in stall
condition.(See K2–189 NO.3 VEHICLE
MOVES IN P POSITION, OR
PARKING GEAR DOES NOT
DISENGAGE WHEN P IS
DISENGAGED.)
4•Excessive creep•Vehicle accelerates in D range, and R
position without depressing accelerator
pedal.(See K2–189 NO.4
EXCESSIVE CREEP.)
5•No creep at all•Vehicle does not move in D range, or R
position when idling on flat paved road.(See K2–189 NO.5 NO CREEP
AT ALL.)
6•Low maximum speed and poor
acceleration•Vehicle acceleration poor at start.
•Delayed acceleration when accelerator
pedal depressed while driving.(See K2–190 NO.6 LOW
MAXIMUM SPEED AND
POOR ACCELERATION.)
7•No shifting•Single shift range only.
•Sometimes it shifts correctly.(See K2–191 NO.7 NO
SHIFTING.)
8•Does not shift to fifth gear (5GR)•Vehicle does not upshift from 4GR to
5GR even though vehicle speed
increased.
•Vehicle does not shift to 5GR even
though accelerator pedal released in D
range at 60 km/h {37 mph}.(See K2–192 NO.8 DOES NOT
SHIFT TO FIFTH GEAR
(5GR).)
9•Abnormal shifting•Shifts incorrectly (incorrect shift pattern). (See K2–193 NO.9
ABNORMAL SHIFTING.)
10•Frequent shifting•Downshifting occurs immediately even
when accelerator pedal depressed
slightly in D range.(See K2–193 NO.10
FREQUENT SHIFTING.)
11•Shift point is high or low•Shift point considerably different from
automatic shift diagram.
•Shift delays when accelerating.
•Shift occurs quickly when accelerating
and engine speed does not increase.(See K2–194 NO.11 SHIFT
POINT IS HIGH OR LOW.)
12•Torque converter clutch (TCC)
non-operation•TCC does not operate when vehicle
reaches TCC operation range.(See K2–194 NO.12 TORQUE
CONVERTER CLUTCH (TCC)
NON-OPERATION.)
13•No kickdown•Does not downshift when accelerator
pedal fully depressed within kickdown
range.(See K2–195 NO.13 NO
KICKDOWN.)
14•Engine flares up or slips when
upshifting or downshifting•When accelerator pedal depressed for
driveway, engine speed increases but
vehicle speed increase slowly.
•When accelerator pedal depressed while
driving, engine speed increases but
vehicle speed does not increase.(See K2–195 NO.14 ENGINE
FLARES UP OR SLIPS WHEN
UPSHIFTING OR
DOWNSHIFTING.)
15•Engine flares up or slips when
accelerating vehicle•Engine flares up when accelerator pedal
depressed for upshifting.
•Engine flares up suddenly when
accelerator pedal depressed for
downshifting.(See K2–196 NO.15 ENGINE
FLARES UP OR SLIPS WHEN
ACCELERATING VEHICLE.)
16•Judder upon torque converter
clutch (TCC) operation•Vehicle jolts when TCC engaged. (See K2–196 NO.16 JUDDER
UPON TORQUE
CONVERTER CLUTCH (TCC)
OPERATION.)

K2–184
TROUBLESHOOTING
17•Excessive shift shock from N to D
or N to R position/range•Strong shock felt when shifting from N to
D or N to R position/range at idle.(See K2–196 NO.17
EXCESSIVE SHIFT SHOCK
FROM N TO D OR N TO R
POSITION/RANGE.)
18•Excessive shift shock is given
when upshifting and downshifting•Excessive shift shock felt when
depressing accelerator pedal to
accelerate at upshifting.
•During cruising, excessive shift shock
felt when depressing accelerator pedal
at downshifting.(See K2–197 NO.18
EXCESSIVE SHIFT SHOCK IS
GIVEN WHEN UPSHIFTING
AND DOWNSHIFTING.)
19•Excessive shift shock on torque
converter clutch (TCC)•Strong shock felt when TCC engaged. (See K2–197 NO.19
EXCESSIVE SHIFT SHOCK
ON TORQUE CONVERTER
CLUTCH (TCC).)
20•Noise occurs at idle when vehicle
is stopped in all positions/ranges•Transaxle noisy in all positions and
ranges when vehicle idling.(See K2–198 NO.20 NOISE
OCCURS AT IDLE WHEN
VEHICLE IS STOPPED IN ALL
POSITIONS/RANGES.)
21•Noise occurs at idle when vehicle
is stopped in D range, or in R
position•Transaxle noisy in driving ranges when
vehicle idling.(See K2–198 NO.21 NOISE
OCCURS AT IDLE WHEN
VEHICLE IS STOPPED IN D
RANGE, OR IN R POSITION.)
22•No engine braking in 1GR position
of M range•Engine speed drops to idle but vehicle
coasts when accelerator pedal released
during cruising at medium to high
speeds.
•Engine speed drops to idle but vehicle
coasts when accelerator pedal released
when in M range (1GR) at low vehicle
speed.(See K2–198 NO.22 NO
ENGINE BRAKING IN 1GR
POSITION OF M RANGE.)
23•Transaxle overheats•Burnt smell emitted from transaxle.
•Smoke emitted from transaxle.(See K2–199 NO.23
TRANSAXLE OVERHEATS.)
24•Engine stalls when shifted to D
range, or in R position•Engine stalls when shifting from N or P
position to D range or R position at idle.(See K2–199 NO.24 ENGINE
STALLS WHEN SHIFTED TO
D RANGE, OR IN R
POSITION.)
25•Engine stalls when driving at slow
speeds or stopping•Engine stalls when brake pedal
depressed while driving at low speed or
stopping.(See K2–200 NO.25 ENGINE
STALLS WHEN DRIVING AT
SLOW SPEED OR
STOPPING.)
26•Starter does not work•Starter does not work even when P or N
position selected.(See K2–200 NO.26
STARTER DOES NOT
WORK.)
27•Gear position indicator light does
not illuminate in M range•Gear position indicator light in
instrument cluster does not illuminate in
M range and ignition switch at on.(See K2–200 NO.27 GEAR
POSITION INDICATOR LIGHT
DOES NOT ILLUMINATE IN M
RANGE.)
28•Gear position indicator light
illuminates in D range or P, N, R
positions•Gear position indicator light in
instrument cluster illuminates in D range
or P, N, R positions and ignition switch at
on.(See K2–201 NO.28 GEAR
POSITION INDICATOR LIGHT
ILLUMINATES IN D RANGE
OR IN P, N, R POSITIONS.)
29•Does not shift up in M range•Gear position indicator light in
instrument cluster illuminates but vehicle
does not upshift when selector lever is
pushed to “+” side.(See K2–201 NO.29 DOES
NOT SHIFT UP IN M RANGE.)
30•Does not shift down in M range•Gear position indicator light in
instrument cluster illuminates but vehicle
does not downshift when selector lever
is pushed to “-” side.(See K2–201 NO.30 DOES
NOT SHIFT DOWN IN M
RANGE.) No. TROUBLESHOOTING ITEM DESCRIPTION PAGE

K2–186
TROUBLESHOOTING
CAN signal
Vehicle dose not move in D range, or in R position
X
XXX X
X
X X
X
XX
X
X
X
X
X
XX
XX
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X
XXX X
XX X
XX X
XX X
XXX
XX
X
XX
X XX XX
X
XX
XX
X XX
X XXXX
XXXX
XXXXX XX XXX
X
X
XX
X
X
X
X
X
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X
X
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XXX
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XX X X
X 1
Excessive creep 4
No creep at all 5
Low maximum speed and poor acceleration 6
No shifting 7
Does not shift to fifth gear (5GR) 8
Abnormal shifting 9
Frequent shifting 10
Shift point is high or low 11
Torque converter clutch (TCC) non-operation 12
No kickdown 13
Engine flares up or slips when upshifting or downshifting 14
Engine flares up or slip when accelerating vehicle 15
Judder upon torque converter clutch (TCC) operation 16
Excessive shift shock from N to D or N to R position/range 17
Excessive shift shock on torque converter clutch (TCC) 19
No engine braking in 1GR position of M range 22
Transaxle overheats 23
Engine stalls when shifted to D range, or in R position 24
Engine stalls when driving at slow speeds or stopping 25
Starter does not work 26Excessive shift shock is given when upshifting and
downshifting 18
Noise occurs at idle when vehicle is stopped in all
positions/ranges 20
Noise occurs at idle when vehicle is stopped in D
range, or in R position 21
Gear position indicator light illuminates in D range or P, N,
R positions 28Gear position indicator light does not illuminate in M range
Electrical system components
ATX inner parts
ATX outer parts
Hydraulic system
components
Control valve body 27
Does not shift up in M range
29
Does not shift down in M rangeSymptom item
Cause of trouble
Open/short
Malfunction signal is inputed Signal is inputed
Open/short
Open/short Open/short
Open/short
Open/short
Open/short
Open/short
Open/short Open/short
Open/short
Open/short Open/short
Control valve spool is not operating properly ATF amount
2-4 brake accumulator is not operating properly Low clutch solenoid accumulator is not operating properly
Direct clutch accumulator is not operating properly High clutch accumulator is not operating properly2-4 brake solenoid valve Pressure control solenoid
TCC solenoid valve
High clutch solenoid valve TFT sensor N-D select
Transaxle range switch
Power supply, GND
Shift solenoid A
Shift solenoid B
Shift solenoid C
Neutral shift solenoid valve
Reducation timing solenoid
GND return line
30Vehicle moves in N position 2
Vehicle moves in P position, or parking gear does not
disengage when P is disengaged 3
A6E5780W002

TROUBLESHOOTING
K2–187
K2
End Of Sie
Vehicle dose not move in D range, or in R position
X
X
X
XXX X
XX X
XX X
XX X XX
X
X
X X XX
XX
X XXXXXXXXX
XXX
X
X
X X
XX XXX
X
X
XX X
X
X
X X
X
X
X X
XX
X XXX X XXX
XX X 1
Excessive creep 4
No creep at all 5
Low maximum speed and poor acceleration 6
No shifting 7
Does not shift to fifth gear (5GR) 8
Abnormal shifting 9
Frequent shifting 10
Shift point is high or low 11
Torque converter clutch (TCC) non-operation 12
No kickdown 13
Engine flares up or slips when upshifting or downshifting 14
Engine flares up or slip when accelerating vehicle 15
Judder upon torque converter clutch (TCC) operation 16
Excessive shift shock from N to D or N to R position/range 17
Excessive shift shock on torque converter clutch (TCC) 19
No engine braking in 1GR position of M range 22
Transaxle overheats 23
Engine stalls when shifted to D range, or in R position 24
Engine stalls when driving at slow speeds or stopping 25
Starter does not work 26Excessive shift shock is given when upshifting and
downshifting 18
Noise occurs at idle when vehicle is stopped in all
positions/ranges 20
Noise occurs at idle when vehicle is stopped in D
range, or in R position 21
Gear position indicator light illuminates in D range or P, N,
R positions 28Gear position indicator light does not illuminate in M range
Hydraulic system
components
Control valve bodyPowertrain 27
Does not shift up in M range
29
Does not shift down in M range
Symptom item
Cause of trouble
Reduction accumulator is not operating properly
Clogging
Clogging
Clogging
Clogging
Clogging
Clogging
Clogging Clogging
Clogging
Slipping (clutch, brake) Oil cooler is not operating properly
Torque converter is not operating properly Burned (clutch, brake)
TCC piston is not operating properly TCC piston is cracking or peeling2-4 brake solenoid valve hydraulic circuit Pressure control solenoid hydraulic circuit
TCC solenoid valve hydraulic circuit
High clutch solenoid valve hydraulic circuit
Shift solenoid A hydraulic circuit
Shift solenoid B hydraulic circuit
Shift solenoid C hydraulic circuit
Neutral shift solenoid valve
Reducation timing solenoid valve
30Vehicle moves in N position 2
Vehicle moves in P position, or parking gear does not
disengage when P is disengaged 3
A6E5780W003

K2–188
TROUBLESHOOTING
NO.1 VEHICLE DOES NOT MOVE IN D RANGE, OR IN R POSITIONA6E578001030204
Diagnostic procedure
End Of SieNO.2 VEHICLE MOVES IN N POSITIONA6E578001030205
1 Vehicle does not move in D range, or in R position
DESCRIPTION•Vehicle does not move when accelerator pedal depressed.
POSSIBLE
CAUSE•If vehicle does not move in D range or R position, basically, malfunction is in ATX. (Vehicle will move
even with a malfunction in TCM.) Since a malfunction in sensor circuit or output circuit is cause of
malfunction in ATX, inspect sensors, output circuit, and related harnesses.
—Clutch slipped, worn (D range-Low clutch, Low one-way clutch, Reduction one-way clutch, R
position-Reverse clutch, Low and reverse brake, Reduction brake)
•Line pressure low
•Malfunction of shift solenoid A, B, or C
•Malfunction of sensor ground
•Malfunction of body ground
•Malfunction of control valve body
—Malfunction of selector lever
—Parking mechanism not properly operated
—Malfunction of torque converter
Note
•Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic
and Automatic Transaxle Basic Inspection are conducted.
STEP INSPECTION ACTION
1•With vehicle stopped on a flat, paved road
and engine off, does vehicle move when
pushed? (in D ranges or N, R positions and
brake released)Yes Go to next step.
No Inspect for parking mechanism.
(See ATX Workshop Manual.)
2•Start engine.
•Does vehicle move when selector lever in
between N position and D range?Yes Inspect or adjust selector lever.
(See K2–117 SELECTOR LEVER INSPECTION.)
(See K2–118 SELECTOR CABLE ADJUSTMENT.)
No Go to next step.
3•Stop engine.
•Inspect pressure control solenoid circuit.
•Is it okay?Yes•Overhaul control valve body and repair or replace any
defective parts.
(See ATX Workshop Manual.)
—If problem remains, replace or overhaul transaxle and
repair or replace any defective parts.
(See K2–99 AUTOMATIC TRANSAXLE AND
TRANSFER REMOVAL/INSTALLATION.)
(See ATX workshop Manual.)
No•Inspect for pressure control solenoid mechanical stuck.
(See K2–88 SOLENOID VALVE INSPECTION.)
—If pressure control solenoid okay, inspect for open or
short circuit between TCM connector terminal 2Y and
pressure control solenoid connector terminal D.
4•Verify test results.
—If okay, return to diagnostic index to service any additional symptoms.
—If malfunction remains, inspect related Service Informations and perform repair or diagnosis.
—If vehicle repaired, troubleshooting completed.
—If vehicle not repaired or additional diagnostic information not available, replace TCM.
2 Vehicle moves in N position
DESCRIPTION•Vehicle creeps in N position.
•Vehicle creeps if brake pedal not depressed in N position.
POSSIBLE
CAUSE•If vehicle moves in N position, basically, malfunction is in ATX. Since a malfunction in sensor circuit or
output circuit is cause of malfunction in ATX, inspect sensors, output circuit, and related harnesses.
—Clutch burned (Low clutch, Low one-way clutch, Low and reverse brake)
•Line pressure low
•Malfunction of control valve body
—Selector lever position disparity (Although the selector indicator shows N position, hydraulic circuit
shows D range or R position)
Note
•Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic
and Automatic Transaxle Basic Inspection are conducted.

K2–196
TROUBLESHOOTING
NO.15 ENGINE FLARES UP OR SLIPS WHEN ACCELERATING VEHICLEA6E578001030218
End Of SieNO.16 JUDDER UPON TORQUE CONVERTER CLUTCH (TCC) OPERATIONA6E578001030219
End Of SieNO.17 EXCESSIVE SHIFT SHOCK FROM N TO D OR N TO R POSITION/RANGEA6E578001030220
Diagnostic procedure
15 Engine flares up or slips when accelerating vehicle
DESCRIPTION•Engine flares up when accelerator pedal depressed for upshifting.
•Engine flares up suddenly when accelerator pedal depressed for downshifting.
POSSIBLE
CAUSE•Malfunction is basically the same as for No.14 “Engine flares up or slips when upshifting or
downshifting”.
—If conditions for No.14 worsen, malfunction will develop into No.15.
Note
•Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic
and Automatic Transaxle Basic Inspection are conducted.
16 Judder upon torque converter clutch (TCC) operation
DESCRIPTION•Vehicle jolts when TCC engaged.
POSSIBLE
CAUSE•Poor TCC engagement due to either slippage because TCC piston is stuck or line pressure is low.
Caution
•If the TCC or piston are stuck, inspect them. In addition, inspect the oil cooler for foreign
particles which may have mixed in with the ATF.
—Torque converter clutch piston slipped, burned
•Line pressure low
•Incorrect throttle position signal
•Malfunction of VSS
•Malfunction of input/turbine speed sensor
•Malfunction of sensor ground
•Malfunction of TCC solenoid valve
•Malfunction of control valve body
—Malfunction of torque converter
Note
•Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic
and Automatic Transaxle Basic Inspection are conducted.
17 Excessive shift shock from N to D or N to R position/range
DESCRIPTION•Strong shock felt when shifting from N to D or N to R position/range at idle.
POSSIBLE
CAUSE•Shift shock may worsen when fail-safe is operating. If no DTC is output, shift shock may worsen due to
poor operation of control valve body or sticking of clutch.
—Clutch burned (N→D: Low clutch, N→R: Reverse clutch or low and reverse brake)
•Line pressure low
•Incorrect throttle position signal
•Malfunction of TFT sensor
•Malfunction of sensor ground
•Misadjustment of throttle cable
•Malfunction of control valve body
—Poor hydraulic operation (Malfunction in range change)
—Idle speed high
—Poor tightening torque of engine mount, exhaust mount
—Line pressure high
Note
•Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic
and Automatic Transaxle Basic Inspection are conducted.
STEP INSPECTION ACTION
1•Does shift shock occur only when engine
cold?Yes Go to next step.
No Go to Step 3.
2•Inspect TFT sensor and related harness:
vibration, intermittent open/short circuit.
•Is it okay?Yes Go to next step.
No Repair or replace part if necessary.