Test Procedure
-- Perform a preliminary check to verify the customers complaint. Refer to PRELIMINARY CHECK
Start diagnosis
-- Remove the right rear wheel housing liner. Refer to the Repair Information
-- Disconnect the Leak Detection Pump (LDP) -V144- electrical harness connector.
Checking internal resistance
-- Using a multimeter, check the Leak Detection Pump (LDP) -V144- for resistance as follows:
| Leak Detection Pump (LDP) -V144- electrical harness connector terminals: | Specified values: |
|---|---|
| 1 and 3 | 640 to 720 Ω |
| 2 and 3 | 15 to 17 Ω |
If any of the specifications are Not obtained:
-- Replace the Leak Detection Pump (LDP) --V144--. Refer to the Repair Information.
If the specified value was obtained:
Checking voltage supply
The voltage for the Leak Detection Pump (LDP) --V144-- is supplied via fuse 15 in fuse panel B.
-- Check the Leak Detection Pump (LDP) --V144-- for voltage.
-- Using a multimeter, check the Leak Detection Pump (LDP) --V144-- electrical harness connector terminal 3 for voltage. Connect the negative multimeter lead to engine ground.
-- Turn the ignition switch ON.
Specified value: Battery voltage.
-- Switch the ignition OFF.
If the specified value was Not obtained:
-- Remove fuse 23 in fuse panel B. Using a multimeter, check the Leak Detection Pump (LDP) --V144-- wiring from terminal 3 to fuse 23 in fuse panel B. Refer to Wiring Diagrams for pin locations.
Specified value: 1.5 Ω max
If the specified value was Not obtained:
-- Check the wiring for high resistance or an open circuit.
-- Check the electrical harness connector for damage, corrosion, loose or broken terminals.
-- If necessary, repair the faulty wiring connection.
If no malfunction is detected in the wiring or if the voltage supply was OK: