Mazda CX 7. Manual - part 247

SYMPTOM TROUBLESHOOTING [AW6A-EL, AW6AX-EL]

05-03–7

05-03

QUICK DIAGNOSIS CHART[AW6A-EL, AW6AX-EL]

id050310800500

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Vehicle does not move in D range, or in R position
Vehicle moves in N position
Vehicle moves in P position, or parking gear does not
disengage when P is disengaged
Excessive creep
No creep at all
Low maximum speed and poor acceleration
No shifting
Does not shift to 6GR
Abnormal shifting
Frequent shifting
Shift point is high or low
Torque converter clutch (TCC) non-operation
No kickdown
Engine flares up or slips when upshifting or downshifting
Engine flares up or slips when accelerating vehicle
Judder upon torque converter clutch (TCC) operation
Excessive shift shock from N to D or N to R position/range
Excessive shift shock is given when upshifting and
downshifting
Excessive shift shock on torque converter clutch (TCC)
Noise occurs at idle when vehicle is stopped in all
positions/ranges
Noise occurs at idle when vehicle is stopped in D
range, or in R position
No engine braking in 1GR position of M range
Transaxle overheats
Engine stalls when shifted to D range, or in R position
Engine stalls when driving at slow speeds or stopping
Starter does not work
Gear position indicator light does not illuminate in M range
Gear position indicator light illuminates in D range or P, N, 
R positions
Does not upshift in M range
Does not downshift in M range

Selector le

v

er is mis-adjisted

Not within line pressure specification

Not within Idle speed specification

P

a

rking mechanism not oper

ating proper

ly

Not within ignition timing specification

N position lear

ning is not perf

or

med

TR s

witch initial lear

ning

TR s

witch

M r

ange s

witch

Up s

witch

Not within A

TF amount

No signal input

No signal input

Abnor

mal signal input

Abnor

mal signal input

No signal input

Abnor

mal signal input

Open/shor

t

Open/shor

t

Open/shor

t

Open/shor

t

Engine speed (from PCM)

Acceler

ator opening (from PCM)

Shift position (to instr

ument cluster)

TCM po

w

er supply/GND

Gar

age shift lear

ning is not perf

or

med

Symptom item

Cause of trouble

Electrical system components

ATX outer parts

CAN 

signal

X

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SYMPTOM TROUBLESHOOTING [AW6A-EL, AW6AX-EL]

05-03–8

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30

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3

Vehicle does not move in D range, or in R position

Excessive creep

Gear position indicator light does not illuminate in M range

Starter does not work

Symptom item

Cause of trouble

Does not downshift in M range

Does not upshift in M range

Engine stalls when driving at slow speeds or stopping

Engine stalls when shifted to D range, or in R position

Transaxle overheats

No engine braking in 1GR position of M range

Excessive shift shock on torque converter clutch (TCC)

Excessive shift shock from N to D or N to R position/range

Judder upon torque converter clutch (TCC) operation

Engine flares up or slips when accelerating vehicle

Engine flares up or slips when upshifting or downshifting

No kickdown

Torque converter clutch (TCC) non-operation

Shift point is high or low

Frequent shifting

Abnormal shifting

Does not shift to 6GR

No shifting

Low maximum speed and poor acceleration

No creep at all

Vehicle moves in N position
Vehicle moves in P position, or parking gear does not
disengage when P is disengaged

Gear position indicator light illuminates in D range or P, N, 
R positions

Noise occurs at idle when vehicle is stopped in D
range, or in R position

Noise occurs at idle when vehicle is stopped in all
positions/ranges

Excessive shift shock is given when upshifting and
downshifting

TFT sensor

VSS

Do

wn s

witch

Input/turbine 

speed sensor

No signal input

No signal input

No signal input

Malfunction signal input

Abnor

mal signal input

Abnor

mal signal input

Abnor

mal signal input

Shift solenoid A

Star

ter loc

k rela

y

TCC control solenoid 

Line pressure control solenoid 

Open/shor

t

Open/shor

t

Open/shor

t

Open/shor

t

Open/shor

t

Open/shor

t

Open/shor

t

Open/shor

t

Open/shor

t

Open/shor

t

Electrical system components

ATX outer parts

ATX inner parts

Shift solenoid B

Shift solenoid D

Shift solenoid F

Shift solenoid E

Shift solenoid C

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SYMPTOM TROUBLESHOOTING [AW6A-EL, AW6AX-EL]

05-03–9

05-03

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Vehicle does not move in D range, or in R position
Vehicle moves in N position
Vehicle moves in P position, or parking gear does not
disengage when P is disengaged
Excessive creep
No creep at all
Low maximum speed and poor acceleration
No shifting
Does not shift to 6GR
Abnormal shifting
Frequent shifting
Shift point is high or low
Torque converter clutch (TCC) non-operation
No kickdown
Engine flares up or slips when upshifting or downshifting
Engine flares up or slips when accelerating vehicle
Judder upon torque converter clutch (TCC) operation
Excessive shift shock from N to D or N to R position/range
Excessive shift shock is given when upshifting and
downshifting
Excessive shift shock on torque converter clutch (TCC)
Noise occurs at idle when vehicle is stopped in all
positions/ranges
Noise occurs at idle when vehicle is stopped in D
range, or in R position
No engine braking in 1GR position of M range
Transaxle overheats
Engine stalls when shifted to D range, or in R position
Engine stalls when driving at slow speeds or stopping
Starter does not work
Gear position indicator light does not illuminate in M range
Gear position indicator light illuminates in D range or P, N, 
R positions
Does not upshift in M range
Does not downshift in M range

Symptom item

Cause of trouble

V

alv

e body spool is not oper

ating proper

ly

C1 accum

ulator is not oper

ating proper

ly

B1 accum

ulator is not oper

ating proper

ly

B2 accum

ulator is not oper

ating proper

ly

Shift solenoid A h

ydr

aulic circuit

Clogging

Clogging

Clogging

Clogging

Clogging

Clogging

Clogging

Clogging

Shift solenoid E h

ydr

aulic circuit

Shift solenoid D h

ydr

aulic circuit

Shift solenoid C h

ydr

aulic circuit

Shift solenoid F h

ydr

aulic circuit

Line pressure control solenoid h

ydr

aulic circuit

TCC control solenoid h

ydr

aulic circuit

Shift solenoid B h

ydr

aulic circuit

Centr

ifugal h

ydr

aulic pressure clutch is not oper

ating proper

ly

A

TF cooler is not oper

ating proper

ly

C2 accum

ulator is not oper

ating proper

ly

C3 accum

ulator is not oper

ating proper

ly

Control valve body

Hydraulic system components

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SYMPTOM TROUBLESHOOTING [AW6A-EL, AW6AX-EL]

05-03–10

End Of Sie

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30

2
3

Vehicle does not move in D range, or in R position

Excessive creep

Gear position indicator light does not illuminate in M range

Starter does not work

Symptom item

Cause of trouble

Does not downshift in M range

Does not upshift in M range

Engine stalls when driving at slow speeds or stopping

Engine stalls when shifted to D range, or in R position

Transaxle overheats

No engine braking in 1GR position of M range

Excessive shift shock on torque converter clutch (TCC)

Excessive shift shock from N to D or N to R position/range

Judder upon torque converter clutch (TCC) operation

Engine flares up or slips when accelerating vehicle

Engine flares up or slips when upshifting or downshifting

No kickdown

Torque converter clutch (TCC) non-operation

Shift point is high or low

Frequent shifting

Abnormal shifting

Does not shift to 6GR

No shifting

Low maximum speed and poor acceleration

No creep at all

Vehicle moves in N position
Vehicle moves in P position, or parking gear does not
disengage when P is disengaged

Gear position indicator light illuminates in D range or P, N, 
R positions

Noise occurs at idle when vehicle is stopped in D
range, or in R position

Noise occurs at idle when vehicle is stopped in all
positions/ranges

Excessive shift shock is given when upshifting and
downshifting

Slipping (clutch, br

ak

e)

Bur

nt (clutch, br

ak

e)

TCC is cr

ac

king or peeling

TCC is not oper

ating proper

ly

One-w

a

y

 clutch is not oper

ated proper

ly

T

orque con

v

e

rter is not oper

ating proper

ly

Powertrain

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