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.
How To Proceed With Troubleshooting
HINT:
- The ECM of this system is connected to the CAN and multiplex communication system. Therefore, before starting troubleshooting, make sure to check that there is no trouble in the CAN and multiplex communication systems.
- *: Use the intelligent tester.
- VEHICLE BROUGHT TO WORKSHOP
- CUSTOMER PROBLEM ANALYSIS
- INSPECT BATTERY VOLTAGE
Standard voltage: 11 to 14 V
If the voltage is below 11V, recharge or replace the battery before proceeding.
- CONNECT INTELLIGENT TESTER TO DLC3*
- CHECK AND CLEAR DTCS AND FREEZE FRAME DATA*
- Refer to the DTC CHECK / CLEAR .
- VISUAL INSPECTION
- SETTING CHECK MODE DIAGNOSIS*
- Refer to the CHECK MODE PROCEDURE .
- PROBLEM SYMPTOM CONFIRMATION
- Refer to the ROAD TEST
.
Result
RESULT REFERENCE CHARTResult Proceed to Symptom does not occur A Symptom occurs B
B: GO TO STEP 10
A: Go to Next Step
- Refer to the ROAD TEST
.
- SYMPTOM SIMULATION
- Refer to the ELECTRONIC CIRCUIT INSPECTION PROCEDURE .
- DTC CHECK*
- Refer to the DTC CHECK / CLEAR
.
Result
RESULT REFERENCE CHARTResult Proceed to DTC is not output A DTC is output B
B: GO TO STEP 18
A: Go to Next Step
- Refer to the DTC CHECK / CLEAR
.
- BASIC INSPECTION
- Refer to the AUTOMATIC TRANSMISSION FLUID .
- Refer to the PARK/NEUTRAL POSITION SWITCH .
- Refer to the FLOOR SHIFT ASSEMBLY .
NG: GO TO STEP 21
OK: Go to Next Step
- MECHANICAL SYSTEM TESTS
- Refer to the MECHANICAL SYSTEM TESTS .
NG: GO TO STEP 17
OK: Go to Next Step
- HYDRAULIC TEST
- Refer to the HYDRAULIC TEST .
NG: GO TO STEP 17
OK: Go to Next Step
- MANUAL SHIFTING TEST
- Refer to the MANUAL SHIFTING TEST .
NG: GO TO STEP 16
OK: Go to Next Step
- PROBLEM SYMPTOMS TABLE CHAPTER 1
- Refer to the PROBLEM SYMPTOMS TABLE .
NG: GO TO STEP 19
OK: Go to Next Step
- PROBLEM SYMPTOMS TABLE CHAPTER 2
- Refer to the PROBLEM SYMPTOMS TABLE .
- PART INSPECTION
NG: GO TO STEP 21
OK: Go to Next Step
- DTC CHART
- Refer to the DIAGNOSTIC TROUBLE CODE CHART .
- CIRCUIT INSPECTION
- IDENTIFICATION OF PROBLEM
- REPAIR OR REPLACE
- CONFIRMATION TEST
NEXT: END
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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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