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STEP
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INSPECTION
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ACTION
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1
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VERIFY RELATED REPAIR INFORMATION AVAILABILITY
• Check for related Service Bulletins and/or on-line repair information availability.
• Is any related repair information available?
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Yes
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Perform repair or diagnosis according to available repair information.
• If vehicle is not repaired, go to next step.
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No
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Go to next step.
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2
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INSPECT TERMINAL COMPONENT NO.1 (12-PIN) FOR POOR CONNECTION
• Turn ignition key to OFF.
• Disconnect terminal componentNo.1 (12-pin).
• Check for poor connection (damaged, pulled-out, terminals, corrosion, etc.).
• Are terminals okay?
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Yes
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Go to next step.
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No
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Repair or replace terminals, then go to Step 12.
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3
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INSPECT RESISTANCE
• Check resistance between terminal component No.1 (12-pin) terminal D (transaxle case side) and body ground.
• Is resistance within 2.6-3.2 ohms?
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Yes
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Go to Step 8.
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No
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Go to next step.
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4
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INSPECT COUPLER COMPONENT (10-PIN) FOR POOR CONNECTION
• Disconnect coupler component (10-pin) connector.
• Check for poor connection (damaged, pulled-out, terminals, corrosion, etc.).
• Is terminal okay?
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Yes
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Go to next step.
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No
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Repair or replace terminal, then go to Step 12.
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5
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INSPECT RESISTANCE
• Check resistance between coupler component (10-pin) terminal L (part side) and body ground.
• Is resistance within 2.6-3.2 ohms?
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Yes
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Repair or replace terminal component No.1 (12-pin), then go to Step 12.
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No
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Go to next step.
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6
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INSPECT PRESSURE CONTROL SOLENOID CONNECTOR FOR POOR CONNECTION
• Disconnect pressure control solenoid connector.
• Check for poor connection (damaged, pulled-out, terminals, corrosion, etc.).
• Is terminal okay?
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Yes
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Go to next step.
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No
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Repair or replace terminal, then go to Step 12.
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7
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INSPECT RESISTANCE
• Check resistance between pressure control solenoid connector (part side) terminal A and body ground.
• Is resistance within 2.6-3.2 ohms?
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Yes
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Repair or replace coupler component (10-pin), then go to Step 12.
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No
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Verify pressure control solenoid installation.
• If pressure control solenoid is installed correctly, replace pressure control solenoid, then go to Step 12
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8
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INSPECT TCM CONNECTOR FOR POOR CONNECTION
• Disconnect TCM connector.
• Check for poor connection (damaged, pulled-out, terminals, corrosion, etc.).
• Are terminals okay?
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Yes
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Go to next step.
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No
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Repair terminals, then go to Step 12.
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9
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INSPECT TERMINAL COMPONENT NO.1 (12-PIN) CIRCUIT FOR OPEN CIRCUIT
• Check continuity between TCM terminal 2Y (harness-side) and terminal component No.1 (12-pin) terminal D (harness-side).
• Is there continuity between terminals?
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Yes
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Go to next step.
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No
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Repair or replace harness, then go to Step 12.
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10
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INSPECT TERMINAL COMPONENT NO.1 (12-PIN) CIRCUIT FOR SHORT TO POWER
• Turn ignition key to ON (engine OFF).
• Check voltage at terminal component No.1 (12-pin) terminal D (harness-side).
• Is voltage 0 V?
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Yes
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Go to next step.
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No
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Repair or replace harness, then go to Step 12.
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11
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INSPECT TCM CIRCUIT FOR SHORT TO GROUND
• Turn ignition key to OFF.
• Check continuity between TCM terminal 2Y (harness-side) and body ground.
• Is there any continuity?
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Yes
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Repair or replace harness, then go to next step.
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No
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Go to next step.
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12
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VERIFY TROUBLESHOOTING OF DTC P0748 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear DTC from memory using WDS or equivalent.
• Drive vehicle in D range and make sure that gears shift smoothly from 1GR to 5GR.
• Is same DTC present?
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Yes
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Replace TCM, then go to next step.
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No
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Go to next step.
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13
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VERIFY AFTER REPAIR PROCEDURE
• Perform "After Repair Procedure".
• Is there any DTC present?
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Yes
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Go to applicable DTC inspection.
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No
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Troubleshooting completed.
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