Last Modified: 11-29-2007 1.6 J
Service Category: Audio/Visual/Telematics Section: Navigation/Multi Info Display
Model Year: 2008 Model: Sequoia Doc ID: RM0000011FO021X
Title: NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: DESCRIPTION (2008 Sequoia)

Reverse Signal Circuit

DESCRIPTION

The navigation receiver receives a reverse signal from the park/neutral position and information about the navigation antenna, and then adjusts vehicle position.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1.

INSPECT NAVIGATION RECEIVER ASSEMBLY

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

I6-5 (REV) - Body ground

Ignition switch ACC, shift lever in R

11 to 14 V

Ignition switch ACC, shift lever in P

Below 1 V
OK

2.

CHECK HARNESS AND CONNECTOR (SWITCH - NAVIGATION RECEIVER - BATTERY AND BODY GROUND)

(a) Disconnect the I6 navigation receiver assembly connector.

(b) Disconnect the D21 park / neutral position switch assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D21-1 (RL) - I6-5 (REV)

Always

Below 1 Ω

D21-1 (RL) - Body ground

Always

10 kΩ or higher

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

D21-2 (RB) - Body ground

Ignition switch off

Below 1 V

Ignition switch ACC

11 to 14 V

(e) Reconnect the navigation receiver assembly connector.

(f) Reconnect the park / neutral position switch assembly connector.

OK

3.

INSPECT PARK / NEUTRAL POSITION SWITCH ASSEMBLY

(a) Disconnect the D21 park / neutral position switch assembly connector

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

Standard Resistance:

Tester Connection

Shift Lever Position

Specified Condition

1 (RL) - 2 (RB)

Ignition switch ACC, shift lever in R

Below 1 Ω

Ignition switch ACC, shift lever in P

10 kΩ or higher

Result

Result

Proceed to

OK

A

NG (for A750E)

B

NG (for A750F)

C

NG (for AB60E)

D

NG (for AB60F)

E

(c) Reconnect the park / neutral position switch assembly connector.

A