Mazda 6. Manual — part 219
TROUBLESHOOTING
K–117
K
NO.1 VEHICLE DOES NOT MOVE IN D, S, L RANGES, OR IN R POSITION
A6E568001030W05
Diagnostic procedure
End Of Sie
NO.2 VEHICLE MOVES IN N POSITION
A6E568001030W06
Diagnostic procedure
1
Vehicle does not move in D, S, L ranges, or in R position
DESCRIPTION
• Vehicle does not move when AP depressed.
POSSIBLE
CAUSE
• If the vehicle does not move in D, S, L ranges or R position, basically, the malfunction is in the ATX.
(Vehicle will move even with a malfunction in the PCM.) Since a malfunction is in the sensor circuit or
output circuit is the cause of the malfunction in the ATX, inspect the sensors, output circuit, and the
related harnesses.
1. Clutch slipped, worn (D, S, L ranges-Forward clutch, R position-Reverse clutch, Low and reverse
brake)
• Line pressure low
• Shift solenoid D malfunction
• Shift solenoid E malfunction
• Shift solenoid A malfunction
• Shift solenoid B malfunction
• Pressure control solenoid malfunction
• Body GND malfunction
• Control valve body malfunction
2. Selector lever malfunction
3. Parking mechanism not properly operation
4. Torque converter malfunction
Note
• Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic
and Automatic Transaxle Basic Inspection are conducted.
STEP
INSPECTION
ACTION
1
When vehicle is stopped on a flat, level road and
engine is off, does vehicle move when pushed?
(in D, S ranges or N, R positions and brake is
released)
Yes
Go to next step.
No
Check for parking mechanism. (See ATX workshop manual
(FN4A-EL) [1623-10-98E].) (See ATX workshop manual
supplement (FN4A-EL) [1746-1*-02C].)
2
Disconnect PCM.
Is resistance between ground terminal at PCM
connector and body ground less than 5.0
ohms?
Yes
Go to next step.
No
Repair open ground circuit.
3
Check LPS PID value using WDS or equivalent.
Is LPS PID value okay?
(See
Yes
Overhaul control valve body and repair or replace any
defective parts. If problem remains, overhaul transaxle and
repair or replace any defective parts. (See ATX workshop
manual (FN4A-EL) [1623-10-98E].) (See ATX workshop
manual supplement (FN4A-EL) [1746-1*-02C].)
No
Repair or replace any defective parts.
2
Vehicle moves in N position
DESCRIPTION
• Vehicle creeps in N position.
• Vehicle creeps if brake pedal is not depressed in N position.
POSSIBLE
CAUSE
• If the vehicle moves in N position, basically, the malfunction is in the ATX. Since a malfunction in the
sensor circuit or output circuit is the cause of the malfunction in the ATX, inspect the sensors, output
circuit, and the related harnesses.
1. Clutch burned (Forward clutch)
• Control valve body malfunction
2. 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.
STEP
INSPECTION
ACTION
1
Does vehicle creep when selector lever is moved
slightly in N position?
Yes
Go to next step.
No
Adjust selector lever. (See
K–118
TROUBLESHOOTING
End Of Sie
NO.3 VEHICLE MOVES IN P POSITION, OR PARKING GEAR DOES NOT DISENGAGE WHEN P IS
DISENGAGED
A6E568001030W07
End Of Sie
NO.4 EXCESSIVE CREEP
A6E568001030W08
End Of Sie
NO.5 NO CREEP AT ALL
A6E568001030W09
Diagnostic procedure
2
Disconnect PCM.
Is resistance between ground terminal at PCM
connector and body ground less than 5.0
ohms?
Yes
Go to next step.
No
Repair open ground circuit.
Reconnect PCM.
3
Check LPS PID value using WDS or equivalent.
Is LPS PID value okay?
(See
.)
Yes
Overhaul control valve body and repair or replace any
defective parts.
If problem remains, overhaul transaxle and repair or replace
any defective parts.
(See ATX workshop manual (FN4A-EL) [1623-10-98E].)
(See ATX workshop manual supplement (FN4A-EL)
[1746-1*-02C].)
No
Repair or replace any defective parts.
STEP
INSPECTION
ACTION
3
Vehicle moves in P position, or parking gear does not disengage when P is disengaged
DESCRIPTION
• Vehicle rolls on a downward slope in P position.
• Tires are locked when P is disengaged. Vehicle does not move in D, S, L ranges, and R position when
AP is depressed, and engine remains in stall condition.
POSSIBLE
CAUSE
1. Parking mechanism malfunction (May have effect on noise or shock from transaxle)
2. Improper adjustment of selector lever
3. If vehicle moves in N position, perform No.2 "Vehicle moves in N position"
4
Excessive creep
DESCRIPTION
• Vehicle accelerates in D, S, L ranges, and R position without depressing accelerator pedal.
POSSIBLE
CAUSE
1. Engine idle speed high (transaxle system is not cause of problem)
2. Go to No.7 “Fast idle/runs on” (See
F–198 NO.7 SLOW RETURN TO IDLE
5
No creep at all
DESCRIPTION
• Either the transaxle is stuck in 3GR position, or there is clutch circuit slippage
POSSIBLE
CAUSE
• Either transaxle is stuck in 3GR or 4GR position, or clutch circuit slippage due to a stuck 3–4 clutch is
stuck.
1. Clutch burned
• Line pressure low
• Shift solenoid D malfunction
• Shift solenoid A malfunction
• Shift solenoid B malfunction
• Shift solenoid C malfunction
• Pressure control solenoid malfunction
• Body GND malfunction
• Control valve body malfunction
2. Transaxle fixed in 3GR (Operation of fail-safe function)
• Short or open circuit in wiring
• Poor connection of connector
• The electronic parts of output and input system is malfunction
3. The engine torque is not start
• Torque converter is malfunction
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 vehicle creep in any range/position?
Yes
Go to next step.
No
Inspect or adjust selector lever.
(See
TROUBLESHOOTING
K–119
K
End Of Sie
NO.6 LOW MAXIMUM SPEED AND POOR ACCELERATION
A6E568001030W10
Diagnostic procedure
2
Check the value at the following PID using the
WDS or equivalent.
(See
• TP
Is PID value okay?
Yes
Go to next step.
No
Repair or replace any defective parts.
3
Disconnect PCM.
Is resistance between ground terminal at PCM
connector and body ground less than 5.0
ohms?
Yes
Go to next step.
No
Repair open ground circuit.
4
Check LPS PID value.
Is LPS PID value okay?
(See
Yes
Overhaul control valve body and repair or replace any
defective parts.
If problem remains, overhaul transaxle and repair or replace
any defective parts. (See ATX workshop manual (FN4A-EL)
[1623-10-98E].) (See ATX workshop manual supplement
(FN4A-EL) [1746-1*-02C].)
No
Repair or replace any defective parts.
STEP
INSPECTION
ACTION
6
Low maximum speed and poor acceleration
DESCRIPTION
• Vehicle acceleration is poor at start.
• Delayed acceleration when accelerator pedal is depressed while driving.
POSSIBLE
CAUSE
• If the clutch is stuck or does not stay in 3GR, the malfunction is in engine circuit.
1. Clutch slipped, burned
• Line pressure low
• Shift solenoid D malfunction
• Shift solenoid E malfunction
• Shift solenoid A malfunction
• Shift solenoid B malfunction
• Shift solenoid C malfunction
• Pressure control solenoid malfunction
• Body GND malfunction
• Control valve body malfunction
2. Signal malfunction
• Vehicle speed sensor malfunction
• Sensor GND malfunction
• TP sensor malfunction
• Input/turbine speed sensor malfunction
3. Transaxle fixed in 3GR (Operation of fail-safe function)
• Short or open circuit in wiring
• Poor connection of connector
• The electronic parts of output and input system have malfunction
4. Insufficient starting torque (Suspected when in-gear condition, shift control and engine circuit are
normal)
• The torque converter have malfunction (Poor operation, stuck)
5. Engagement of TCC operation range (Operation of fail-safe function)
• Transaxle fluid temperature sensor malfunction (Short or open circuit)
6. Transaxle fixed in HOLD mode
• HOLD switch malfunction
7. TR switch adjustment incorrect
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 ignition switch at ON, does HOLD indicator
light indication correspond to HOLD switch
operation?
Yes
Go to next step.
No
Go to No.26 "HOLD INDICATOR LIGHT DOES NOT
ILLUMINATE WHEN HOLD SWITCH IS TURNED ON.".
No.27 "HOLD INDICATOR LIGHT ILLUMINATES WHEN
HOLD SWITCH IS NOT TURNED ON."
2
Go to No.12 "Lack/loss of power".
(See
.) Does CIS
system okay?
Yes
Go to next step.
No
Repair or replace any defective parts.
K–120
TROUBLESHOOTING
End Of Sie
NO.7 NO SHIFTING
A6E568001030W11
End Of Sie
NO.8 DOES NOT SHIFT TO FOURTH GEAR (4GR)
A6E568001030W12
3
Disconnect solenoid connector.
Does vehicle operate as follows?
D, S ranges: 3GR (fixed) L range: 1GR (fixed)
R position: Reverse
Yes
Go to next step.
No
Overhaul control valve body and repair or replace any
defective parts. If problem remains, overhaul transaxle and
repair or replace any defective parts.
(See ATX workshop manual (FN4A-EL) [1623-10-98E].)
(See ATX workshop manual supplement (FN4A-EL)
[1746-1*-02C].)
4
Drive vehicle in D, S, and L ranges except HOLD
mode. Does vehicle start from stop in first gear?
Yes
Go to next step.
No
Check the value at the following PIDs using the WDS or
equivalent.
(See
• TP
• VSS
• TSS
• TR
Repair or replace any defective parts.
5
Check the value at the following PIDs using the
WDS or equivalent.
(See
.)
• SSA/SS1
• SSB/SS2
• SSC/SS3
Are PID values okay?
Yes
Go to next step.
No
Check the value at the following PIDs using the NGS tester.
(See
• TP
• VSS
• TSS
Repair or replace any defective parts.
6
Perform the stall test. (See
.)
Is stall speed okay?
Yes
Reverify symptoms of malfunction.
No
Overhaul transaxle and repair or replace any defective
parts. (See ATX workshop manual (FN4A-EL)
[1623-10-98E].) (See ATX workshop manual supplement
(FN4A-EL) [1746-1*-02C].)
STEP
INSPECTION
ACTION
7
No shifting
DESCRIPTION
• Single shift range only.
• Sometimes it shifts correctly.
POSSIBLE
CAUSE
• When the gear position is fixed in 3GR due to the fail-safe operation, the malfunction is in the ATX.
• Perform malfunction diagnosis according to No.6 "Low maximum speed and poor acceleration".
1. Clutch slippage, burned
• Line pressure low
• Shift solenoid D malfunction
• Shift solenoid E malfunction
• Shift solenoid A malfunction
• Shift solenoid B malfunction
• Shift solenoid C malfunction
• Pressure control solenoid malfunction
• Body GND malfunction
• Control valve body malfunction
2. Signal malfunction
• Vehicle speed sensor malfunction
• Sensor GND malfunction
• TP sensor malfunction
• Input/turbine speed sensor malfunction
3. Transaxle fixed in 3GR (Operation in fail-safe function)
• Short or open circuit in wiring
• Poor connection of connector
• Disconnected shift solenoid connector
• Poor ground of shift solenoid
4. Transaxle fixed in HOLD mode
• HOLD switch malfunction
8
Does not shift to fourth gear (4GR)
DESCRIPTION
• Vehicle does not upshift from 3GR to 4GR even though vehicle speed increased.
• Vehicle does not shift to 4GR even though accelerator pedal is released in D range at 60 km/h {37
mph}.
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