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 MANUALSVOLKSWAGEN2010ROUTAN SREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 166 (AUTOMATIC TRANSMISSION - CVT)DIAGNOSIS AND TESTINGDIAGNOSTIC FLOW CHART

2010 Volkswagen Routan S

Diagnostic Flow Chart

2010 Volkswagen Routan SSECTION Diagnostic Flow Chart

WARNING: This page is about a different car, the 2005 Mercury Montego, 2005 Ford Freestyle, and 2005 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.

DIAGNOSTIC FLOW CHART

Diagnostic Flow Chart
Know and understand the customer concerns. Check the fluid level and condition. Verify the concern by operating the vehicle. Check for non-factory-installed items and verify correct installation. Check the shift linkage adjustments. Check TSBs and OASIS messages for vehicle concerns. Carry out quick test both KOER and KOEO. Record all codes.
1) Did you record any Diagnostic Trouble Codes?	Yes	REPAIR all hard non-transmission Diagnostic Trouble Codes first. REFER to the appropriate PINPOINT TESTS listed in the INTRODUCTION - GASOLINE article for diagnosis and repair of non-transmission DTCs. Then for Transmission DTCs follow the pinpoint tests in this section. GO to Step 2
1) Did you record any Diagnostic Trouble Codes?	No	REFER to DIAGNOSIS BY SYMPTOM , then GO to Step 5.
2) Are any continuous test memory codes present?	Yes	CLEAR codes and CARRY OUT drive cycle test, then GO to Step 3.
2) Are any continuous test memory codes present?	No	GO to Step 4.
3) Did the continuous test memory codes reappear?	Yes	REPAIR all hard non-transmission Diagnostic Trouble Codes first. REFER to the appropriate PINPOINT TESTS listed in the INTRODUCTION - GASOLINE article for diagnosis and repair of non-transmission DTCs. Then for Transmission DTCs follow the pinpoint tests in this section. GO to Step 4.
3) Did the continuous test memory codes reappear?	No	GO to Step 4.
4) Is the concern repaired?	Yes	CARRY OUT the final quick test to verify that no Diagnostic Trouble Codes (DTC) are present. CLEAR memory codes.
4) Is the concern repaired?	No	REFER to DIAGNOSIS BY SYMPTOM to diagnose and repair the concern, then GO to Step 5.
5) Is the concern repaired?	Yes	CARRY OUT the final quick test to verify that no diagnostic trouble codes are present. CLEAR memory codes.
5) Is the concern repaired?	No	GET assistance from Technical Hotline.

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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.