Mazda 6. Manual — part 222
TROUBLESHOOTING
K–129
K
NO.22 NO ENGINE BRAKING IN HOLD MODE
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Diagnostic procedure
End Of Sie
NO.23 TRANSAXLE OVERHEATS
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Diagnostic procedure
22
No engine braking in hold mode
DESCRIPTION
• 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 L range at
low vehicle speed.
POSSIBLE
CAUSE
1. Clutch slippage, burned (low and reverse brake)
• Line pressure low
• Shift solenoid D malfunction
• Shift solenoid E malfunction
• Shift solenoid C malfunction
• Control valve body malfunction
• Body GND malfunction
2. Signal malfunction
• TP sensor malfunction
• Vehicle speed sensor malfunction
• Sensor GND malfunction
• Input/turbine speed sensor malfunction
3. HOLD switch ON not judged by PCM (short, or open circuit, poor operation)
• HOLD switch signal 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
• Do following symptoms concurrently occur?
— Engine flares up or slips during
acceleration.
— Engine flares up or slips when shifting.
Yes
Go to symptom troubleshooting NO.14 "Engine flares up or
slips when upshifting or downshifting" or No.15 "Engine
flares up or slips when accelerating vehicle".
No
Repeat basic inspection and repair or replace any defective
parts according to inspection result.
(See
23
Transaxle overheats
DESCRIPTION
• Burnt smell emitted from transaxle.
• Smoke emitted from transaxle.
POSSIBLE
CAUSE
• The malfunction is restricted to hindrance of coolant at the oil cooler. In addition, overheating of the
transaxle may be caused by a malfunction of the transaxle fluid temperature sensor.
1. Burned (TCC)
• Line pressure low
• Control valve body malfunction
• Accelerator cable misadjustment
2. Oil cooler malfunction (Foreign material mixed ATF)
3. Transaxle fluid temperature sensor malfunction
4. Excessive amount of ATF
5. 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
• Inspect for bent, damage, corrosion or kinks
of oil cooler pipes.
• Are oil cooler pipes okay?
Yes
Go to next step.
No
Replace any defective parts.
2
• Perform the stall test.
(See
• Is stall speed okay?
Yes
Go to next step.
No
Repair or replace any defective parts.
3
• 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.
K–130
TROUBLESHOOTING
End Of Sie
NO.24 ENGINE STALLS WHEN SHIFTED TO D, S, L RANGES, OR IN R POSITION
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Diagnostic procedure
End Of Sie
NO.25 ENGINE STALLS WHEN DRIVING AT SLOW SPEEDS OR STOPPING
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Diagnostic procedure
End Of Sie
NO.26 STARTER DOES NOT WORK
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End Of Sie
NO.27 HOLD INDICATOR LIGHT DOES NOT ILLUMINATE WHEN HOLD SWITCH IS TURNED TO ON
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4
• 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.
5
• Check LPS PID value.
• Is LPS PID value okay?
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
24
Engine stalls when shifted to D, S, L ranges, or in R position
DESCRIPTION
• Engine stalls when shifting from N or P position to D, S, L ranges or R position at idle.
POSSIBLE
CAUSE
• The malfunction is on the engine control side (i.e. IAC system). Otherwise, the malfunction is in the
input/turbine speed sensor (engine sometimes starts) or TCC circuit (engine always stalls).
STEP
INSPECTION
ACTION
1
• Go to symptom troubleshooting No.10 “Low
idle/stalls during deceleration”.
(See
• Is engine control system okay?
Yes
Repeat basic inspection and repair or replace any defective
parts according to inspection result.
(See
No
Repair or replace any defective parts according to
inspection results.
25
Engine stalls when driving at slow speeds or stopping
DESCRIPTION
• Engine stalls when brake pedal is depressed while driving at low speed or stopping.
POSSIBLE
CAUSE
• The malfunction on engine control side (e.g. Fuel injection control, IAC system) Otherwise, the
malfunction is in the control valve body, shift solenoid E or TCC.
STEP
INSPECTION
ACTION
1
• Go to symptom troubleshooting No.9 “Low
idle/stalls during deceleration”.
(See
• Does engine control system okay?
Yes
Go to next step.
No
Repair or replace any defective parts according to
inspection results.
2
• Go to symptom troubleshooting No.4 "Engine
CRANK/ERRATIC START/ERRATIC
CRANK
.)
• Is engine control system okay?
Yes
Repeat basic inspection and repair or replace any defective
parts according to inspection result.
(See
No
Repair or replace any defective parts according to
inspection results.
26
Starter does not work
DESCRIPTION
• Starter does not work even when P or N position.
POSSIBLE
CAUSE
• Selector lever misadjustment
• TR switch misadjustment
• Open or short circuit in TR switch
27
HOLD indicator light does not illuminate when HOLD switch is turned to ON
DESCRIPTION
• HOLD indicator light in dashboard does not illuminate when HOLD switch is turned on and IG SW at
ON.
POSSIBLE
CAUSE
• HOLD switch, HOLD indicator light or related wiring harness malfunction.
TROUBLESHOOTING
K–131
K
Diagnostic procedure
End Of Sie
NO.28 HOLD INDICATOR LIGHT ILLUMINATES WHEN HOLD SWITCH IS NOT TURNED TO ON
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Diagnostic procedure
End Of Sie
STEP
INSPECTION
ACTION
1
• Are other indicator lights illuminated with
ignition switch is at ON?
Yes
Inspect meter fuse.
No
Go to next step.
2
• Check the HOLD switch
(See
• Is HOLD switch okay?
Yes
Go to next step.
No
Repair or replace any defective parts.
3
• Disconnect PCM.
• Turn ignition switch on.
• Is voltage between 3Q terminal at the PCM
connector and body ground greater than
10.5 V?
Yes
Replace PCM.
No
Reconnect PCM.
Go to next step.
4
• Check the HOLD indicator light.
• Is HOLD indicator light okay?
Yes
Inspect for open circuit or disconnected connector in
harness between the following:
• Ignition switch and HOLD indicator light
• HOLD indicator light and PCM
No
Repair or replace any defective parts.
28
HOLD indicator light illuminates when HOLD switch is not turned to ON
DESCRIPTION
• HOLD indicator light in dashboard illuminates even though HOLD switch is turned off and IG SW at ON.
POSSIBLE
CAUSE
• HOLD switch or related wiring harness malfunction.
STEP
INSPECTION
ACTION
1
• Check the HOLD switch
(See
• Is HOLD switch okay?
Yes
Go to next step.
No
Repair or replace any defective parts.
2
• Disconnect PCM.
• Turn ignition switch off.
• Is resistance between 3Q terminal at the
PCM connector and body ground greater
than 10 kilohms?
Yes
Replace PCM.
No
Repair short circuit between HOLD indecator light and
PCM.
Reconnect PCM.
M–1
M
M
FRONT AND REAR AXLES
LOCATION INDEX . . . . . . . . . . . . M-2
LOCATION INDEX. . . . . . . . . . ... M-2
REAR AXLE LOCATION INDEX. . . . . . . M-3
GENERAL PROCEDURES . . . . . . . . ... M-3
PRECAUTION (FRONT AND REAR AXLE) . ... M-3
FRONT AXLE . . . . . . . . . . . . . . M-4
PRE-INSPECTION. . . . . . . . . . ... M-4
WHEEL HUB BOLT REPLACEMENT . . . . M-4
WHEEL HUB, STEERING KNUCKLE
REMOVAL/INSTALLATION . . . . . . . . M-5
REAR AXLE . . . . . . . . . . . . . . .. M-9
PRE-INSPECTION. . . . . . . . . . ... M-9
REMOVAL/INSTALLATION . . . . . . ... M-10
DRIVE SHAFT . . . . . . . . . . . . . . M-12
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