Checking Coolant Fan V7 (left)

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Fuses for Coolant Fan V7 and Coolant Fan Control (FC) Control Module J293 OK → Electrical Wiring Diagrams, Troubleshooting and Component Locations.

Fig 1: Removing Cover In Engine Compartment (Left Side)

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove cover - 1 - in engine compartment (left side).

Fig 2: Removing Electrical Harness Connectors And From Bracket

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Remove electrical harness connector - 1 - from bracket and disconnect it.

Fig 3: Identifying 4-Pin Connector & Terminals

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Connect multimeter for voltage measurement as follows.

Harness connector Terminal	Measure to
- 1 -	Engine Ground (GND)
- 4 -	Battery positive (B+)

Specification: approx. battery voltage respectively

If specifications are not obtained:

Repair wire connection if necessary.

If specified values are achieved:

Connect multimeter for voltage measurement as follows:

Harness connector Terminal	Measure to
- 2 -	Engine Ground (GND)

Specification: approx. battery voltage

If specification is not obtained:

Repair wire connection if necessary.

If specified value is not achieved:

Fig 4: Identifying 4-Pin Connector & Terminals

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Connect multimeter between terminal - 2 - and - 3 - of harness connector for voltage measurement.

Vehicle Diagnostic, Testing and Information System VAS 5051 connected, "Vehicle Self-Diagnosis" and vehicle system "01 Engine electronics" selected. The ignition must be switched on.

Fig 5: Diagnostic System VAS 5051: Display

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Display on VAS 5051 :

In selection - 1 - , click on function "03 - output Diagnostic Test Mode (DTM)".
Press → key repeatedly, until "coolant fan activation 1" is activated.

Voltage value must decrease slowly from approx. battery voltage to approx. 8 volts (and then increase again).

End function "03 - output Diagnostic Test Mode (DTM)" by pressing ← button.
Select "06 - End Output".
Switch off ignition.

If specification is not obtained:

Fig 6: Connecting Test Box VAG1598/31 To Engine Control Module Wiring Harness

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Connect test box V.A.G 1598/31 to wiring harness connectors, Engine Control Module (ECM) is not connected. Connect Ground (GND) clip at test box (not visible in illustration) to Ground (GND) → 24 MULTIPORT FUEL INJECTION (MFI) .

CAUTION: To avoid damaging electronic components, set measuring range before connecting test leads and observe all test requirements.

Fig 7: Identifying 4-Pin Connector & Terminals

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Check following wire connection for open circuit and short circuit to Ground (GND) and B+:

Harness connector Terminal	Test box V.A.G 1598/31 Socket
- 4 -	66

Repair wire connection if necessary.

If no malfunctions are detected:

Remove front bumper cover →
- 63 BUMPER
- 63 - BUMPERS for BODY EXTERIOR - CABRIOLET
.

Fig 8: Connecting Multimeter With Measuring Probes And Connector Adapters From Connector Test Kit V.A.G 1594 C (Harness Connector Remains Connected)

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Connect multimeter with measuring probes and connector adapters from connector test kit V.A.G 1594 C between terminal - 1 - and terminal - 2 - of brown harness connector on Coolant Fan Control (FC) Control Module J293 ; harness connector remains connected.

Vehicle Diagnostic, Testing and Information System VAS 5051 A connected, "Vehicle Self-Diagnosis" and vehicle system "01 Engine electronics" selected. The ignition must be switched on.

Fig 9: Diagnostic System VAS 5051: Display

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Display on VAS 5051 :

In selection - 1 - , click on function "03 - output Diagnostic Test Mode (DTM)".
Press → key repeatedly, until "coolant fan activation 1" is activated.

Voltage value must increase up to approx. 10.5 volts (and then decrease again).

End function "03 - output Diagnostic Test Mode (DTM)" by pressing ← button.
Select "06 - End Output".
Switch off ignition.

If specified value is reached but fan does not run:

Replace Coolant Fan V7 → Coolant Fan V7 (left), removing and installing .

If specification is not obtained:

Fig 10: Removing Electrical Harness Connectors And From Bracket

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Check wire connections from harness connector at left front in engine compartment to Coolant Fan Control (FC) Control Module J293 according to wiring diagram.

If no malfunctions are detected:

Replace Coolant Fan Control (FC) Control Module J293.