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 MANUALSVOLKSWAGEN2016PASSAT R-LINE, 1.8L ENG VIN TREPAIR AND DIAGNOSISTRANSMISSIONTRANSMISSION CONTROL SYSTEMSENGINE & TRANSMISSION SYSTEM (DIAGNOSTICS - CPRA, CPKA)ST GENERIC SCAN TOOLDIAGNOSIS AND TESTINGDIAGNOSTIC PROCEDURESFUEL INJECTORS --, CHECKINGTEST PROCEDURE

2016 Volkswagen Passat R-Line, 1.8L Eng VIN T

Test Procedure

2016 Volkswagen Passat R-Line, 1.8L Eng VIN TSECTION Test Procedure

Step	Procedure	Result / Action to Take
1	PERFORM: Preliminary Check to verify the customers complaint. Refer to: PRELIMINARY CHECK . -- Was Complaint verified?	-- YES: GO TO: Step 2 Fuel Injectors --, CHECKING (2) . -- NO: GATHER more information from customer about the complaint.
2	IGNITION: OFF. DISCONNECT: Harness connector from suspect Fuel Injector --. CHECK: Suspect Fuel Injector -- component connector terminals 1 to 2 for resistance (refer to the wiring diagram for proper terminal locations). SPECIFIED VALUE: 0.5 - 15 Ω (@ approx. 20° C). -- Was Value obtained?	-- YES: GO TO: Step 3 Fuel Injectors --, CHECKING (3) . -- NO: REPLACE: Suspect Fuel Injector -- (s). GO TO: Step 4 Fuel Injectors --, CHECKING (4) .
3	REMOVE: Engine Control Module - J623-. CHECK: Suspect Fuel Injector -- harness connector terminal 1 to the Engine Control Module - J623- harness connector T105 / xx (refer to the wiring diagram for proper terminal locations). CHECK: Suspect Fuel Injector -- harness connector terminal 2 to the Engine Control Module - J623- harness connector T105 / xx (refer to the wiring diagram for proper terminal locations). SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω). -- Were Values obtained?	-- YES: TIP: The Fuel Injector -- may fail under loaded operation; please swap a known good Fuel Injector -- prior to continuing to the next step. GO TO: Step 4 Fuel Injectors --, CHECKING (4) . -- NO: PERFORM: Visual Inspection of wiring and component. CHECK: Wiring for open, high resistance, short or harness connector for damage, corrosion, loose or broken terminals. REPAIR: Faulty wiring or connector. GO TO: Step 4 Fuel Injectors --, CHECKING (4) .
4	Final Procedure Perform a road test to verify repair. -- Does the original DTC return?	-- YES: CHECK: Engine Control Module -J623- harness connector for any damaged, pushed out pins. REPAIR: As necessary. If all electrical connections are OK: REPLACE: Engine Control Module -J623-. Clear the DTC's. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY . Repair is complete. Generate Readiness Code. Refer to READINESS CODE . Return vehicle to Customer. -- NO: Perform the diagnostic procedure for any DTC's. If no DTC's return the repair is complete. Return vehicle to customer.

RENDER: 1.0x

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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.