Inspection Procedure

WARNING: This page is about a different car, the 2007 Lexus ES 350. However, it is still accessible from the selected car via links, so may be relevant.

CHECK BACK-UP LIGHT
1. Move the shift lever to the R position and check if the back-up lights come on.
  OK: The back-up lights come on.
NG: GO TO LIGHTING SYSTEM

OK: Go to Next Step

CHECK VEHICLE SIGNAL (DISPLAY CHECK MODE)

Enter the "Display Check" mode (Vehicle Signal Check Mode) (See DISPLAY CHECK MODE ).

Check that the display changes between ON and OFF according to the shift lever operation (P and R).

SHIFT LEVER POSITION CHART

Shift Lever Position	Display
Reverse	ON
Except Reverse	OFF

HINT:

This display is updated once per second. As a result, it is normal for the display to lag behind the actual change in the switch.

Fig 1: Diagnostic Tool Display - Vehicle Signal Check Mode

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to step 5

OK: Go to Next Step

CHECK HARNESS AND CONNECTOR (NAVIGATION ECU - MULTI-DISPLAY)

Disconnect multi-display connector p1 and navigation ECU connector p2.

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 - REV	Always	Below 1 Ω
REV - Body ground	Always	10 kΩ or higher

Fig 2: Identifying Multi-Display Connector P1 And Navigation ECU Connector P2

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

INSPECT NAVIGATION ECU

Reconnect the multi-display connector p1.

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	Engine switch is on (IG). Shift lever is moved to Reverse position.	10 to 14 V
REV - Body ground	Engine switch is on (IG). Shift lever is moved to any position except Reverse.	Below 1 V

Fig 3: Identifying Multi-Display Connector P1

NG: REPLACE MULTI-DISPLAY

OK: REPLACE NAVIGATION ECU

INSPECT MULTI-DISPLAY

Disconnect the multi-display connector E62.

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	Engine switch is on (IG). Shift lever is moved to Reverse position.	10 to 14 V
REV - Body ground	Engine switch is on (IG). Shift lever is moved to any position except Reverse.	Below 1 V

Fig 4: Identifying Multi-Display Connector E62

OK: REPLACE MULTI-DISPLAY

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (MULTI-DISPLAY - PARK/NEUTRAL POSITION SWITCH)