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 connector terminals:	Specified values:
1 to 2	134 to 153 Ω
1 to 3	134 to 153 Ω
1 to 4	99 to 118 Ω

If any of the specified values were Not obtained:

-- Replace the Leak Detection Pump (LDP) --V144--. Refer to the Repair Information.

If the specified values were obtained:

Checking voltage supply

-- Using a multimeter, check the Leak Detection Pump (LDP) --V144-- electrical harness connector terminal 4 for voltage. Connect the negative lead to engine ground.

-- Start the engine.

Specified value: Battery voltage.

-- Switch the ignition Off.

Continue test according to the following table:

Value	Cause	Test
If the specified value was not obtained:	Open or shorted circuit	Checking Wiring
If the specified value was obtained:	Check reference signal circuit	Checking Wiring