Mazda Protege 5. Manual — part 238
SYMPTOM TROUBLESHOOTING
05–03–11
05–03
NO.1 VEHICLE DOES NOT MOVE IN D, 2, 1 RANGES, OR IN R POSITION
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NO.2 VEHICLE MOVES IN N POSITION
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NO.3 VEHICLE MOVES IN P POSITION, OR PARKING GEAR DOES NOT DISENGAGE WHEN P IS
DISENGAGED
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NO.4 EXCESSIVE CREEP
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1
Vehicle does not move in D, 2, 1 ranges, or in R position
DESCRIPTION
•
Vehicle does not move when accelerator pedal is depressed.
POSSIBLE
CAUSE
•
If the vehicle does not move in D, 2, 1 ranges or R position, basically, the malfunction is in the ATX.
(Vehicle will move even with a malfunction in the PCM.) 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.
a. Clutch slippage, worn (D, 2, 1 ranges - Forward clutch, R position - Reverse clutch, Low and reverse
brake)
•
Line pressure low
•
Sensor GND malfunction
•
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
b. Selector lever malfunction
c. Parking mechanism not operating properly
d. Torque converter malfunction
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.
a. Clutch burned (Forward clutch)
•
Control valve body malfunction
b. Selector lever position disparity (Although the selector illumination shows N position, the hydraulic
circuit shows D range or R position)
3
Vehicle moves in P position, or parking gear does not disengage when P is disengaged
DESCRIPTION
•
Vehicle rolls when on a downward slope and tires do not lock in P position.
•
Tires are locked when P is disengaged. Vehicle does not move in D, 2, 1 ranges, and R position when
accelerator pedal is depressed, and engine remains in stall condition.
POSSIBLE
CAUSE
•
Parking mechanism malfunction (May have effect on noise or shock from transaxle)
•
Improper adjustment of selector lever
•
If vehicle moves in N position, perform No.2 “Vehicle moves in N position”
4
Excessive creep
DESCRIPTION
•
Vehicle accelerates in D, 2, 1 ranges, and R position without depressing accelerator pedal.
POSSIBLE
CAUSE
•
Engine idle speed high (transaxle system is not cause of problem)
•
Go to symptom troubleshooting No.8 “Fast idle/runs on”.
(See 01–03A–7 SYMPTOM DIAGNOSTIC INDEX [ZM].)
(See 01–03B–7 SYMPTOM DIAGNOSTIC INDEX [FS].)
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SYMPTOM TROUBLESHOOTING
05–03–12
NO.5 NO CREEP AT ALL
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NO.6 LOW MAXIMUM SPEED AND POOR ACCELERATION
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Diagnostic procedure
Note
•
If malfunction remains, inspect related Service Bulletins and perform repair or diagnosis.
•
If vehicle is repaired, troubleshooting is completed.
•
If vehicle is not repaired or additional diagnostic information is not available, replace PCM.
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5
No creep at all
DESCRIPTION
•
Vehicle does not move in D, 2, 1 ranges, or R position when idling on flat paved road.
POSSIBLE
CAUSE
•
Either the transaxle is stuck in 3GR or 4GR position, or there is clutch circuit slippage because the 3–4
clutch is stuck.
a. Clutch burned
•
Line pressure low
•
Shift solenoid D malfunction
•
Shift solenoid A malfunction
•
Shift solenoid B malfunction
•
Pressure control solenoid malfunction
•
Body GND malfunction
•
Control valve body malfunction
b. Transaxle fixed in 3GR (Operation of fail-safe function)
•
Short or open circuit in wiring
•
Poor connection of connector
•
Electronic parts of output and input system are malfunctioning
c. Engine torque is not produced
•
Torque converter is malfunctioning
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 the engine circuit.
a. Clutch slippage, burned
•
Line pressure low
•
TP sensor malfunction
•
VSS malfunction
•
Input/turbine speed sensor malfunction
•
Sensor GND malfunction
•
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
b. Transaxle fixed in 3GR (Operation of fail-safe function)
•
Short or open circuit in wiring
•
Poor connection of connector
•
Electronic parts of output and input system are malfunctioning
c. Insufficient starting torque (Suspected when in-gear condition, shift control and engine circuit are
normal)
•
Torque converter is malfunctioning (Poor operation, sticking)
d. Engagement of TCC operation range (Operation of fail-safe function)
•
TFT sensor malfunction (Short or open circuit)
STEP
INSPECTION
ACTION
1
•
Go to symptom troubleshooting No.11 “Lack/
loss of power”.
(See 01–03A–7 SYMPTOM DIAGNOSTIC
INDEX [ZM].)
(See 01–03B–7 SYMPTOM DIAGNOSTIC
INDEX [FS].)
•
Is engine control system okay?
Yes
Repeat basic inspection and repair or replace any defective
parts according to inspection result.
(See 05–03–6 AUTOMATIC TRANSAXLE BASIC
INSPECTION.)
No
Repair or replace any defective parts according to
inspection results.
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SYMPTOM TROUBLESHOOTING
05–03–13
05–03
NO.7 NO SHIFTING
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NO.8 DOES NOT SHIFT TO FOURTH GEAR (4GR)
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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”.
a. Clutch burned
•
Line pressure low
•
VSS malfunction
•
Input/turbine speed sensor malfunction
•
Sensor GND malfunction
•
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
b. Transaxle fixed in 3GR (Operation in fail-safe function)
•
Short or open circuit in wiring
•
Poor connection of connector
•
Disconnected shift solenoid connector
•
Poor GND of shift solenoid
8
Does not shift to fourth gear (4GR)
DESCRIPTION
•
Vehicle does not upshift from 3GR to 4GR even though vehicle speed is increased.
•
Vehicle does not shift to 4GR even though accelerator pedal is released in D range at 60 km/h {37
mph}.
POSSIBLE
CAUSE
•
Basically, the TCC does not operate when the fail-safe is operating. Verify the DTC first. If the TCC
operates when driving at high speeds only, the malfunction (improper adjustment) is in the O/D OFF
switch circuit or TR switch circuit.
Caution
••••
If the TCC is stuck, inspect it. In addition, inspect the oil cooler for foreign particles which
may have mixed in with the ATF.
a. TCC slippage, burned
•
Line pressure low
•
TP sensor malfunction
•
ECT sensor malfunction
•
VSS malfunction
•
Input/turbine speed sensor malfunction
•
Sensor GND malfunction
b. TFT sensor malfunction
•
Short or open circuit in wiring
•
Poor connection of connector
•
Sensor malfunction
c. TR switch malfunction
•
Short or open circuit in wiring
•
Poor connection of connector
•
Sensor malfunction
•
Selector lever adjustment incorrect
•
TR switch adjustment incorrect
d. Shift solenoid A, shift solenoid E malfunction
•
Short or open circuit in wiring
•
Poor connection of connector
•
Solenoid valve stuck
e. O/D OFF switch malfunction
f. Torque converter malfunction
g. Control valve body malfunction
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SYMPTOM TROUBLESHOOTING
05–03–14
NO.9 ABNORMAL SHIFTING
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NO.10 FREQUENT SHIFTING
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NO.11 SHIFT POINT IS HIGH OR LOW
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9
Abnormal shifting
DESCRIPTION
•
Shift incorrectly (incorrect shift pattern).
POSSIBLE
CAUSE
•
There is a malfunction in the signal circuit which controls shifting (TP sensor, input/turbine speed
sensor, VSS), the control valve is stuck, the accumulator (forward or servo apply) is stuck, or the clutch
circuit is stuck.
a. Clutch slippage, burned
•
Line pressure low
•
TP sensor malfunction or misadjustment
•
VSS malfunction
•
Input/turbine speed sensor malfunction
•
Sensor GND malfunction
•
Shift solenoid D malfunction
•
Shift solenoid E malfunction
•
Shift solenoid A malfunction
•
Shift solenoid B malfunction
•
Shift solenoid C malfunction
•
Body GND malfunction
•
Accelerator cable misadjustment
•
Control valve body malfunction
10
Frequent shifting
DESCRIPTION
•
Downshifting occurs immediately even when accelerator pedal is depressed slightly in D, 2, 1 ranges
except O/D OFF mode.
POSSIBLE
CAUSE
•
The circuit which is the cause is basically the same as for No.9 “Abnormal shifting”. However, a
malfunction of the input signal to the TP sensor, input/turbine speed sensor, VSS (including the sensor
GND, sensor harness and connector), or clutch slippage (clutch stuck, low pressure in line) may also be
the cause.
11
Shift point is high or low
DESCRIPTION
•
Shift point is considerably different from automatic shift diagram.
•
Shift delays when accelerating.
•
Shift occurs quickly when accelerating and engine speed does not increase.
POSSIBLE
CAUSE
•
If the transaxle shift abnormal, there is a malfunction of the input signal to the TP sensor, input/turbine
speed sensor, or VSS.
•
If the engine speed is high or low regardless that shifting is normal, inspect the tachometer.
•
Verify that the output signal of the TP sensor changes linearly.
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