Mazda CX 7. Manual - part 246

SYMPTOM TROUBLESHOOTING [AW6A-EL, AW6AX-EL]

05-03–3

05-03

FOREWORD[AW6A-EL, AW6AX-EL]

id050310800200

• When the customer reports a vehicle malfunction, inspect the malfunction indicator lamp (MIL) indication, AT

warning indicator light flash, and diagnostic trouble code (DTC), then diagnose the malfunction according to
following flowchart.

— If a DTC exists, diagnose the applicable DTC inspection. (See 05-02-5 DTC TABLE[AW6A-EL, AW6AX-

EL].)

— If a DTC does not exist, the MIL does not illuminate and the AT warning indicator light illuminate, diagnose

the applicable symptom troubleshooting. (See 05-03-4 SYMPTOM TROUBLESHOOTING ITEM
TABLE[AW6A-EL, AW6AX-EL].)

*: Malfunction Indicator Lamp (MIL), AT warning light.

End Of Sie

BASIC INSPECTION[AW6A-EL, AW6AX-EL]

id050310800300

CUSTOMER ARRIVES

WARNING LIGHT*
ON/FLASHING

CHECK FOR
PRIORITIZED DTC

DIAGNOSE BY DTC
(ON-BOARD DIAGNOSTIC)

DTC TABLE

TROUBLESHOOTING
FLOW

DTC

NO WARNING LIGHT*
WITH SYMPTOM

CHECK DTC

IGNITION ON TEST, IDLING
TEST

WITHOUT DTC

DIAGNOSE BY SYMPTOM
(SYMPTOM TROUBLESHOOTING)
1. DIAGNOSTIC INDEX
2. QUICK DIAGNOSIS CHART

3. SYMPTOM
TROUBLESHOOTING

DTC

acxuuw00002535

STEP

INSPECTION

ACTION

• Measure the battery voltage.

• Is the battery voltage 10.0— 14.0 V?

Yes

Go to the next step.

Replace or recharge the battery.
(See 01-17-4 BATTERY RECHARGING[L3 WITH TC].)

• Inspect the TCM related harnesses,

connectors and fuses.

• Are they normal?

Yes

Go to the next step.

Repair or replace any malfunctioning parts according to the
inspection result.

• Warm up the engine to normal operating

temperature.

• Retrieve DTC using the M-MDS.

• Is there any DTC present?

Yes

Record Freeze Frame Data and perform appropriate DTC
troubleshooting procedures.

Go to the next step.

• Perform the road test.

• Is the ATX operating normally?

Yes

Go to the next step.

Repair or replace any malfunctioning parts according to the
inspection result.

• Perform the time lag test.

• Is the ATX operating normally?

Yes

Go to the next step.

Repair or replace any malfunctioning parts according to the
inspection result.

• Perform the stall test.

• Is the stall speed within the specified?

Yes

Go to the next step.

Repair or replace any malfunctioning parts according to the
inspection result.

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SYMPTOM TROUBLESHOOTING [AW6A-EL, AW6AX-EL]

05-03–4

End Of Sie

SYMPTOM TROUBLESHOOTING ITEM TABLE[AW6A-EL, AW6AX-EL]

id050310800400

• Use the chart below to verify the symptoms of the trouble in order to diagnose the appropriate area.

• Perform the line pressure test.

• Is the line pressure within the specified?

Yes

Perform the symptom troubleshooting and follow the
procedures.

Repair or replace any malfunctioning parts according to the
inspection result.

• Inspect following part or signal related PIDs

using the M-MDS.
— APP sensor

— TSS

— VSS

— TFT sensor

— TR switch

— M range switch

— Up switch

— Down switch

— Brake switch

— Engine speed

• Are they normal?

Yes

Perform the symptom troubleshooting and follow the
procedures.

Repair or replace any malfunctioning parts according to the
inspection result.

STEP

INSPECTION

ACTION

No.

TROUBLESHOOTING ITEM

DESCRIPTION

PAGE

• Vehicle does not move in D range,

or in R position

• Vehicle does not move when accelerator

pedal is depressed.

(See 05-03-11 NO.1 VEHICLE
DOES NOT MOVE IN D
RANGE, OR IN R
POSITION[AW6A-EL, AW6AX-
EL].)

• Vehicle moves in N position

• Vehicle creeps in N position.

• Vehicle creeps if brake pedal is not

depressed in N position.

(See 05-03-12 NO.2 VEHICLE
MOVES IN N
POSITION[AW6A-EL, AW6AX-
EL].)

• Vehicle moves in P position, or

parking gear does not disengage
when P position is disengaged

• Vehicle rolls when on a downward slope

and tires do not lock in P position.

• Tires locked when P position is

disengaged, vehicle does not move in D
range, and R position when accelerator
pedal is depressed, and engine remains
in stalled condition.

(See 05-03-12 NO.3 VEHICLE
MOVES IN P POSITION, OR
PARKING GEAR DOES NOT
DISENGAGE WHEN P IS
DISENGAGED[AW6A-EL,
AW6AX-EL].)

• Excessive creep

• Vehicle accelerates in D range, and R

position when accelerator pedal is not
depressed.

(See 05-03-12 NO.4
EXCESSIVE CREEP[AW6A-
EL, AW6AX-EL].)

• No creep at all

• Vehicle does not move in D range, or R

position when idling on flat paved road.

(See 05-03-13 NO.5 NO
CREEP AT ALL[AW6A-EL,
AW6AX-EL].)

• Low maximum speed and poor

acceleration

• Vehicle acceleration is poor at start.

• Delayed acceleration when accelerator

pedal is depressed while driving.

(See 05-03-14 NO.6 LOW
MAXIMUM SPEED AND
POOR
ACCELERATION[AW6A-EL,
AW6AX-EL].)

• No shifting

• Single shift range only.

• Sometimes shifts correctly.

(See 05-03-15 NO.7 NO
SHIFTING[AW6A-EL, AW6AX-
EL].)

• Does not shift to 6GR

• Vehicle does not upshift from 5GR to

6GR even though vehicle speed
increased.

• Vehicle does not shift to 6GR even

though accelerator pedal is released in
D range at 80 km/h {50 mph}.

(See 05-03-16 NO.8 DOES
NOT SHIFT TO 6GR[AW6A-
EL, AW6AX-EL].)

• Abnormal shifting

• Shifts incorrectly (incorrect shift pattern). (See 05-03-17 NO.9

ABNORMAL
SHIFTING[AW6A-EL, AW6AX-
EL].)

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SYMPTOM TROUBLESHOOTING [AW6A-EL, AW6AX-EL]

05-03–5

05-03

• Frequent shifting

• Downshifting occurs suddenly even

when accelerator pedal is depressed
slightly in D range.

(See 05-03-18 NO.10
FREQUENT SHIFTING[AW6A-
EL, AW6AX-EL].)

• Shift point is high or low

• Shift point considerably different from

automatic shift diagram.

• Shift delays when accelerating.

• Shift occurs suddenly when accelerating

and engine speed does not increase.

(See 05-03-18 NO.11 SHIFT
POINT IS HIGH OR
LOW[AW6A-EL, AW6AX-EL].)

• Torque converter clutch (TCC)

non-operation

• TCC does not operate when vehicle

reaches TCC operation range.

(See 05-03-18 NO.12
TORQUE CONVERTER
CLUTCH (TCC) NON-
OPERATION[AW6A-EL,
AW6AX-EL].)

• No kickdown

• Does not downshift when accelerator

pedal is fully depressed within kickdown
range.

(See 05-03-19 NO.13 NO
KICKDOWN[AW6A-EL,
AW6AX-EL].)

• Engine flares up or slips when

upshifting or downshifting

• When accelerator pedal is depressed,

engine speed increases normally but
vehicle speed increases slowly.

• When accelerator pedal is depressed

while driving, engine speed increases
but vehicle speed does not increase.

(See 05-03-19 NO.14 ENGINE
FLARES UP OR SLIPS WHEN
UPSHIFTING OR
DOWNSHIFTING[AW6A-EL,
AW6AX-EL].)

• Engine flares up or slips when

accelerating vehicle

• Engine flares up when accelerator pedal

is depressed for upshifting.

• Engine flares up suddenly when

accelerator pedal is depressed for
downshifting.

(See 05-03-20 NO.15 ENGINE
FLARES UP OR SLIPS WHEN
ACCELERATING
VEHICLE[AW6A-EL, AW6AX-
EL].)

• Judder upon torque converter

clutch (TCC) operation

• Vehicle jolts when TCC is engaged.

(See 05-03-21 NO.16
JUDDER UPON TORQUE
CONVERTER CLUTCH (TCC)
OPERATION[AW6A-EL,
AW6AX-EL].)

• Excessive shift shock from N to D

or N to R position/range

• Strong shock is felt when shifting from N

to D or N to R position/range at idle.

(See 05-03-21 NO.17
EXCESSIVE SHIFT SHOCK
FROM N TO D OR N TO R
POSITION/RANGE[AW6A-EL,
AW6AX-EL].)

• Excessive shift shock is given

when upshifting and downshifting

• Excessive shift shock is felt when

depressing accelerator pedal to
accelerate at upshifting.

• During cruising, excessive shift shock is

felt when depressing accelerator pedal
at downshifting.

(See 05-03-23 NO.18
EXCESSIVE SHIFT SHOCK IS
GIVEN WHEN UPSHIFTING
AND DOWNSHIFTING[AW6A-
EL, AW6AX-EL].)

• Excessive shift shock on torque

converter clutch (TCC)

• Strong shock is felt when TCC is

engaged.

(See 05-03-23 NO.19
EXCESSIVE SHIFT SHOCK
ON TORQUE CONVERTER
CLUTCH (TCC)[AW6A-EL,
AW6AX-EL].)

• Noise occurs at idle when vehicle

is stopped in all positions/ranges

• Transaxle is noisy in all positions and

ranges when vehicle is idling.

(See 05-03-23 NO.20 NOISE
OCCURS AT IDLE WHEN
VEHICLE IS STOPPED IN ALL
POSITIONS/RANGES[AW6A-
EL, AW6AX-EL].)

• Noise occurs at idle when vehicle

is stopped in D range, or in R
position

• Transaxle is noisy in driving ranges

when vehicle is idling.

(See 05-03-24 NO.21 NOISE
OCCURS AT IDLE WHEN
VEHICLE IS STOPPED IN D
RANGE, OR IN R
POSITION[AW6A-EL, AW6AX-
EL].)

No.

TROUBLESHOOTING ITEM

DESCRIPTION

PAGE

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SYMPTOM TROUBLESHOOTING [AW6A-EL, AW6AX-EL]

05-03–6

End Of Sie

• No engine braking in 1GR position

of M range

• Engine speed drops to idle but vehicle

coasts when accelerator pedal is
released during cruising at medium to
high speeds.

• Engine speed drops to idle but vehicle

coasts when accelerator pedal is
released when in M range (1GR) at low
vehicle speed.

(See 05-03-24 NO.22 NO
ENGINE BRAKING IN 1GR
POSITION OF M
RANGE[AW6A-EL, AW6AX-
EL].)

• Transaxle overheats

• Burnt smell emitted from the transaxle.

• Smoke is emitted from the transaxle.

(See 05-03-25 NO.23
TRANSAXLE
OVERHEATS[AW6A-EL,
AW6AX-EL].)

• 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 05-03-26 NO.24 ENGINE
STALLS WHEN SHIFTED TO
D RANGE, OR IN R
POSITION[AW6A-EL, AW6AX-
EL].)

• Engine stalls when driving at slow

speeds or stopping

• Engine stalls when brake pedal is

depressed while driving at low speed or
stopping.

(See 05-03-26 NO.25 ENGINE
STALLS WHEN DRIVING AT
SLOW SPEED OR
STOPPING[AW6A-EL,
AW6AX-EL].)

• Starter does not work

• Starter does not work even when P or N

position is selected.

(See 05-03-27 NO.26
STARTER DOES NOT
WORK[AW6A-EL, AW6AX-
EL].)

• Gear position indicator light does

not illuminate in M range

• Gear position indicator light in

instrument cluster does not illuminate in
M range with ignition switch at ON.

(See 05-03-27 NO.27 GEAR
POSITION INDICATOR LIGHT
DOES NOT ILLUMINATE IN M
RANGE[AW6A-EL, AW6AX-
EL].)

• 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 with ignition switch at
ON.

(See 05-03-28 NO.28 GEAR
POSITION INDICATOR LIGHT
ILLUMINATES IN D RANGE
OR P, N, R POSITIONS[AW6A-
EL, AW6AX-EL].)

• Does not upshift in M range

• Gear position indicator light in

instrument cluster illuminates but vehicle
does not upshift when selector lever is
pushed to “+” side.

(See 05-03-28 NO.29 DOES
NOT UPSHIFT IN M
RANGE[AW6A-EL, AW6AX-
EL].)

• Does not downshift in M range

• Gear position indicator light in

instrument cluster illuminates but vehicle
does not downshift when selector lever
is pushed to “–” side.

(See 05-03-28 NO.30 DOES
NOT DOWNSHIFT IN M
RANGE[AW6A-EL, AW6AX-
EL].)

No.

TROUBLESHOOTING ITEM

DESCRIPTION

PAGE

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