Using diagnostic tester with 100A current probe -VAS 5051B/7-, this page covers checking the LHD Volkswagen Golf Mk7 auxiliary air heater element -Z35- — test conditions require intake temperature below 19°C and coolant below a specified threshold.
| Special tools and workshop equipment
required |
| Vehicle diagnostic tester with current probe 100 A -VAS
5051B/7- |
| Intake temperature less than 19° C |
| Coolant temperature less than 80° C |
| Passenger compartment temperature about 20° C |
| Battery voltage greater than 11 V |
| Alternator load not greater than 50 % (terminal DF) |
| Engine speed greater than 450 rpm |
| Turn rotary knob for interior temperature to highest
temperature (on vehicles with Climatronic select highest level). |
| – |
Remove left centre console trim in footwell
→ General body repairs, interior; Rep. gr.68. |
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| – |
Using vehicle diagnostic tester and current probe 100 A -VAS
5051B/7-, measure current draw -arrow-
on earth wire -1- of auxiliary air
heater element -Z35--2-. |
| Low heat output ≈ 30 amps |
| Medium heat output ≈ 60 amps |
| High heat output ≈ 80 amps |
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Questions & answers
Checking auxiliary air heater element -Z35- with auxiliary air heater control unit -J604-, LHD vehicles — Volkswagen Golf Mk7
How do I check the Golf Mk7 auxiliary air heater -Z35- (LHD)?
Use a vehicle diagnostic tester with current probe. Check the PTC element draws the correct current during operation.
Note
If only the fresh air blower -V2- is defective, remove and
install fresh air blower control unit -J126-
→ Chapter.
...
Checking
Special tools and workshop equipment
required
Vehicle diagnostic tester with current probe 100 A -VAS
505 ...
Removing and installing fresh air blower - V2-, RHD vehicles
Checking auxiliary air heater element - Z35- with auxiliary air heater
control unit - J604-, RHD vehicles