Mazda CX-7 2007 Workshop Manual page 994

SYMPTOM TROUBLESHOOTING [AW6A-EL, AW6AX-EL]
NO.8 DOES NOT SHIFT TO 6GR[AW6A-EL, AW6AX-EL]
8 Does not shift to 6GR
• Vehicle does not upshift from 5GR to 6GR even though vehicle speed is increased.
• Vehicle does not shift to 6GR even though accelerator pedal is released in D range at 80 km/h {50
DESCRIPTION
mph}.
• Basically, TCC does not operate when the fail-safe is operating. Verify the DTC at first. If the TCC
operates when driving at high speeds only, the malfunction (improper adjustment) is in the M range
switch circuit or TR switch circuit.
Caution
• If the TCC is stuck, inspect it. In addition, inspect the oil cooler for foreign particles which
— TCC slippage, burnt
• Line pressure low
• Incorrect accelerator opening signal
• VSS malfunction
• Input/turbine speed sensor malfunction
• Sensor GND malfunction
— TFT sensor malfunction
• Short or open circuit in wiring harness
• Poor connection of connector
• Sensor malfunction
POSSIBLE
— TR switch malfunction
CAUSE
• Selector lever adjustment incorrect
• TR switch adjustment incorrect
— TCC control solenoid malfunction
• Short or open circuit in wiring harness
• Poor connection of connector
• Solenoid valve stuck
— M range switch malfunction
• Selector lever adjustment incorrect
• Short or open circuit in wiring harness
— Torque converter malfunction
— Control valve body malfunction
Note
• Before following the troubleshooting steps, make sure that the Automatic Transaxle On-Board
Diagnostic and Automatic Transaxle Basic Inspection are conducted. (See 05-03-3 BASIC
INSPECTION[AW6A-EL, AW6AX-EL].)
Diagnostic procedure
STEP
• With the ignition switch at the ON position.
1
• Does the gear position indicator light
indication correspond to selector lever
position?
• Drive the vehicle in D range and inspect
2
following:
— 1–2 shift up and down
— 2–3 shift up and down
— 3–4 shift up and down
— 4–5 shift up and down
— 5–6 shift up and down
• Are all shift-up and shift-down possible?
• Stop the engine.
3
• Inspect following solenoid.
(See 05-17-20 SOLENOID VALVE
INSPECTION[AW6A-EL, AW6AX-EL].)
— Shift solenoid C
— Shift solenoid D
— Shift solenoid E
— Shift solenoid F
— Line pressure control solenoid
• Are they normal?
05-03–16
may have mixed in with the ATF.
INSPECTION
Yes Go to the next step.
No Go to No.27 "GEAR POSITION INDICATOR LIGHT DOES
NOT ILLUMINATE IN M RANGE", or No.28 "GEAR
POSITION INDICATOR LIGHT ILLUMINATES IN D RANGE
OR P, N, R POSITIONS".
Yes Go to the next step.
No No shift at all:
• Go to No.7 "NO SHIFTING".
Abnormal shift:
• Go to No.9 "ABNORMAL SHIFTING".
Yes Go to the next step.
No Inspect for shift solenoid stuck.
(See 05-17-20 SOLENOID VALVE INSPECTION[AW6A-EL,
AW6AX-EL].)
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