Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus IS 350. However, it is still accessible from the selected car via links, so may be relevant.

CHECK ECM (FRP VOLTAGE)

Measure the voltage according to the value (s) in the table below.

Standard voltage

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
FPR (A5-15) - E1 (E4-7)	STA signal ON	9 to 14 V
FPR (A5-15) - E1 (E4-7)	STA signal OFF	0 to 3 V

Fig 1: Identifying Terminals Of E4 And A5 ECM Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE ECM

OK: Go to next step.

INSPECT RELAY (Marking: F/PMP)

Remove the F/PMP relay from the engine room R/B No. 2.

Measure the resistance according to the value (s) in the table below.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Specified Condition
3 - 4	Below 1 Ω
3 - 4	10 kΩ or more (when battery voltage is applied to terminals 1 and 2)

Fig 2: Identifying Terminals Of F/PMP Relay

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE RELAY

OK: Go to next step.

CHECK HARNESS AND CONNECTOR (F/PMP RELAY - ECM)

Remove the F/PMP relay from the engine room R/B No. 2.
Disconnect the A5 ECM connector.

Measure the resistance according to the value (s) in the table below.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Specified Condition
F/PMP relay terminal 2 - FPR (A5-15)	Below 1 Ω
F/PMP relay terminal 2 or FPR (A5-15) - Body Ground	10 kΩ or higher

Fig 3: Identifying Terminals Of A5 ECM Connector

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE ECM