Jetta L4-1.9L DSL Turbo (BEW) (2004)
If the campaign has not been completed:
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Proceed to appropriate campaign circular (VZ / M3).
Passenger Side Seat Heater Switch Wiring Harness End Connector Reference
Step 2
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Remove passenger side seat heater switch, see Repair Manual Group 72 in ElsaWeb. DO NOT disconnect wiring harness connector.
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Switch ignition key ON.
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Passenger side seat heater switch OFF.
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Using a DVOM to ground, Measure voltage at pin 4 and pin 5 of the seat heater switch wiring harness connector.
No voltage on one or both circuits indicates a open circuit (open fuse, open wire or harness connection). Repair appropriately, otherwise proceed to step
3.
Step 3
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Switch the ignition OFF.
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Disconnect the seat heater switch from the connector.
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Use an ohm meter and measure resistance between pin 2 and pin 6 of the seat heater connector.
If the resistance is less than 2.5 ohms:
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Proceed to step 4
If the resistance is greater than 2.5 ohms:
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Proceed to step 5
Step 4
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Connect the seat heater switch wiring harness connector.
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Switch the ignition ON.
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Place seat heater switch in position 1.
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Measure voltage at pin 2 of the seat heater switch wiring harness connector.
If there is no voltage:
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Replace seat heater switch.
Step 5
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Remove seat trim per Repair Manual Group 72 in ElsaWeb and access seat heater element wiring harness connector.
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Measure resistance between pin 3 and pin 4 of the seat heater element male green connector: