Inspection Procedure

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

INSPECT NAVIGATION ECU

Disconnect the navigation ECU connector L16.

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

Standard voltage

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester connection	Condition	Specified condition
REV - Body ground	Ignition switch is on (IG). Shift lever is moved to R position.	10 to 14 V
REV - Body ground	Ignition switch is on (IG). Shift lever is moved to any position except R.	Below 1 V

OK : REPLACE NAVIGATION ECU

Fig 1: Disconnecting Navigation ECU Connector L16

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to Next Step

CHECK HARNESS AND CONNECTOR (NAVIGATION ECU - PARK/ NEUTRAL POSITION SWITCH)

Disconnect the navigation ECU connector L16 and park / neutral position switch connector B13.

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester connection	Condition	Specified condition
REV - B13-2	Always	Below 1 Ω
REV - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 2: Checking Harness And Connector (Navigation ECU - Park/ Neutral Position Switch)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step

INSPECT PARK / NEUTRAL POSITION SWITCH

Disconnect the park / neutral position switch connector B13.

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester connection	Condition	Specified condition
B13-1 - B13-2	Shift lever is moved to R position.	Below 1 Ω
B13-1 - B13-2	Shift lever is moved to any position except R.	10 kΩ or higher

NG: REPLACE PARK / NEUTRAL POSITION SWITCH

Fig 3: Identifying Park / Neutral Position Switch Connector B13

OK : REPAIR OR REPLACE HARNESS OR CONNECTOR