Reverse Signal Circuit

NAVIGATION SYSTEM: Reverse Signal Circuit

Reverse Signal Circuit

DESCRIPTION

The navigation receiver assembly receives a reverse signal from the park/neutral position switch (back-up light switch) and information about the GPS antenna, and then adjusts vehicle position.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT NAVIGATION RECEIVER ASSEMBLY





(a) Disconnect the navigation receiver assembly connector R5.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:





OK -- REPLACE NAVIGATION RECEIVER ASSEMBLY
NG -- Continue to next step.
2. CONFIRM MODEL
Result:





B -- CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - BACK-UP LIGHT SWITCH)
A -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - PARK/NEUTRAL POSITION SWITCH)





(a) Disconnect the navigation receiver assembly connector R5 and park/neutral position switch connector A3.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
4. INSPECT PARK/NEUTRAL POSITION SWITCH





(a) Disconnect the park/neutral position switch connector A3.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:





NG -- REPLACE PARK/NEUTRAL POSITION SWITCH
OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR
5. CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - BACK-UP LIGHT SWITCH)





(a) Disconnect the navigation receiver assembly connector R5 and back-up light switch connector B1.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
6. CHECK HARNESS AND CONNECTOR (BACK-UP LIGHT SWITCH - BATTERY)





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





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE BACK-UP LIGHT SWITCH