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.
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HOMESERVICE MANUALSINFINITI2002Q45 V8-4.5L (VK45DE)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTTRANSMISSION CONTROL SYSTEMSSERVICE PRECAUTIONSPRECAUTIONS
2002 Infiniti Q45 V8-4.5L (VK45DE)
Precautions
2002 Infiniti Q45 V8-4.5L (VK45DE)SECTION Precautions
Precautions
NOTE: If any problems occur in the RE5R05A model transmission, replace the entire transmission assembly.
- Before connecting or disconnecting the TCM harness connector, turn ignition switch "OFF" and disconnect negative battery terminal. Because battery voltage is applied to TCM even if ignition switch is turned "OFF".
- When connecting or disconnecting pin connectors into or from TCM, take care not to damage pin terminals (bend or break).
Make sure that there are not any bends or breaks on TCM pin terminal, when connecting pin connectors.
- Before replacing TCM, perform TCM input/output signal inspection and make sure whether TCM functions properly or not. AT-63. "TCM INSPECTION TABLE".
- After performing each TROUBLE DIAGNOSIS, perform "DTC (Diagnostic Trouble Code) CONFIRMATION PROCEDURE".
If the repair is completed the DTC should not be displayed in the "DTC CONFIRMATION PROCEDURE".
- Always use the specified brand of A/T fluid.
- Use paper rags not cloth rags during work.
- After replacing the A/T fluid. dispose of the waste oil using the methods prescribed by law. ordinance. etc.
- When removing the RE5R05A model transmission from a vehicle, do not use the companion flange section at the rear end of the transmission as a support point.
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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.