Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2007 Mazda CX-9 V6-3.5LFACTORY OEM SERVICE PROCEDURE
Control Module: Testing and Inspection
TCM INSPECTION [AW6A-EL, AW6AX-EL]
TR Switch Operating Inspection
1. Verify that the starter operates only when the ignition switch is turned to the START position with the selector lever in P or N position.
^ If there is any malfunction, neutral position learning.
2. Verify that the back-up lights illuminate when shifted to R position with the ignition switch at the ON position.
^ If there is any malfunction, neutral position learning.
3. Verify that the positions of the selector lever and the indicator light correspond. If there is any malfunction, perform the neutral position learning.
4. Verify that the TR PID is normal. If there is any malfunction, perform the neutral position learning.
Control Module Inspection
1. Remove the air cleaner component.
2. Measure the voltage at each TCM connector (wiring harness-side) terminal and refer to the terminal voltage table. If the voltage is not as specified in the Terminal Voltage Table (Reference), inspect the parts under "Inspection item (s)".
Warning:
^ Be careful not to damage the connector waterproofing when measuring the TCM terminal voltage. If damaged, the waterproofing efficiency could be negatively affected.
Note:
^ Use the ground of terminal A9 of the TCM connector (wiring harness-side) when measuring terminal voltage, as an error may occur when connecting the negative circuit tester to ground.
3. Remove the TCM.
4. Verify that continuity or resistance at terminal is as indicated in the terminal continuity/resistance table.
^ If there is any malfunction, inspect the parts under "Inspection item (s)".
- If the system does not work properly even though the parts or related wiring harnesses do not have any malfunction, replace the TCM.
TR Switch Operating Inspection
1. Verify that the starter operates only when the ignition switch is turned to the START position with the selector lever in P or N position.
^ If there is any malfunction, neutral position learning.
2. Verify that the back-up lights illuminate when shifted to R position with the ignition switch at the ON position.
^ If there is any malfunction, neutral position learning.
3. Verify that the positions of the selector lever and the indicator light correspond. If there is any malfunction, perform the neutral position learning.
4. Verify that the TR PID is normal. If there is any malfunction, perform the neutral position learning.
Control Module Inspection
1. Remove the air cleaner component.
2. Measure the voltage at each TCM connector (wiring harness-side) terminal and refer to the terminal voltage table. If the voltage is not as specified in the Terminal Voltage Table (Reference), inspect the parts under "Inspection item (s)".
Warning:
^ Be careful not to damage the connector waterproofing when measuring the TCM terminal voltage. If damaged, the waterproofing efficiency could be negatively affected.
Note:
^ Use the ground of terminal A9 of the TCM connector (wiring harness-side) when measuring terminal voltage, as an error may occur when connecting the negative circuit tester to ground.
Terminal Voltage Table (reference) (Part 1):
Terminal Voltage Table (reference) (Part 2):
3. Remove the TCM.
4. Verify that continuity or resistance at terminal is as indicated in the terminal continuity/resistance table.
^ If there is any malfunction, inspect the parts under "Inspection item (s)".
- If the system does not work properly even though the parts or related wiring harnesses do not have any malfunction, replace the TCM.
Terminal Continuity/Resistance Table (Reference) (Part 1):
Terminal Continuity/Resistance Table (Reference) (Part 2):
Terminal Continuity/Resistance Table (Reference) (Part 3):
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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