Service & Repair Manual

24-52
B - If relay triggers, but Fuel Pump (FP) does not
run:
- Check voltage supply for Fuel Pump (FP) and
components (via Fuel Pump -FP- relay) Page
24-54 .
Check voltage supply of Fuel Pump (FP)
relay
- Remove Fuel Pump (FP) relay.
If specified value is not obtained:
Checking activation of Fuel Pump (FP) relay
- Connect multimeter to terminal 17 of relay socket and Ground (GND)
for voltage measurement.
Specification: approx. battery voltage
- Replace central electrics.
- Switch ignition off.
- Connect VAG1598/31 test box at wiring harness to ECM, do not
connect ECM Page 24-17 .
- Bridge terminals 1 and 65 at test box using wires from VAG1594A
adapter test kit.
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