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STEP
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INSPECTION
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ACTION
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1
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Powertrain control system
• Are there any malfunctions with the following?
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- Electrical input/output
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- Vehicle wiring harness
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- PCM
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- 3-2 timing/coasting clutch solenoid (3-2T/CCS)
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Yes
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Perform OBD test
Perform DTC troubleshooting
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No
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Go to the next step
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2
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Control Valve Body
• Do any of the following malfunctions exist?
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- Bolts are not tightened to the specification
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- Gaskets are damaged
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- Low/reverse modulator valve, coasting clutch valve are stuck damaged, or misassembled
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- 3-2T/CCS is stuck or damaged
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- Hydraulic passages are damaged
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- Pressure tap plate/gasket is damaged
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- Separator plate/gasket is damaged
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Yes
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Service if necessary
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No
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Go to the next step
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3
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Oil pump
• Does the following malfunction exist?
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- Pump support seal rings #2 and #3 for the coast clutch circuit are damaged or missing
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Yes
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Service if necessary
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No
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Go to the next step
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4
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Coasting clutch component
• Do any of the following malfunctions exist?
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- Component misassembled or damaged
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- Forward clutch hub seal is damaged
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- Piston or seals are damaged
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- Inspect the ball for damage or missing
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Yes
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Service if necessary
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No
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Go to the next step
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5
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Low/reverse clutch component
• Do any of the following malfunctions exist?
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- Misassembled
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- Damaged
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- Piston or seals are damaged
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Yes
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Service if necessary
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No
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The problem is resolved
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6
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• Verify the test results.
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- If normal, return to the diagnostic index to service any additional symptoms.
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- If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis.
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• If the vehicle is repaired, troubleshooting is completed.
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• If the vehicle is not repaired or additional diagnostic information is not available, replace the PCM.
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