Toyota 4Runner: Reverse Signal Circuit
DESCRIPTION
The navigation receiver assembly receives a reverse signal from the park/neutral position switch assembly.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- After replacing the navigation receiver assembly of vehicles subscribed to pay-type satellite radio broadcasts, registration of the XM radio ID is necessary.
- Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
|
1. |
CHECK VEHICLE SIGNAL (OPERATION CHECK) |
|
(a) Enter the "Vehicle Signal Check Mode" screen. Refer to check Vehicle
Signal in Operation Check (See page |
|
.gif)
).
(b) Check that the display changes between ON and OFF according to the shift lever position.
OK:
|
Shift Lever Position |
Display |
|---|---|
|
R |
ON |
|
Except R |
OFF |
HINT:
This display is updated once per second. As a result, it is normal for the display to lag behind the actual shift lever position.
| OK | .gif) |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
.gif)
|
2. |
CHECK HARNESS AND CONNECTOR (REVERSE SIGNAL) |
|
(a) Disconnect the G37 navigation receiver assembly connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
G37-2 (REV) - Body ground |
Ignition switch ON Shift lever in R |
11 to 14 V |
|
Ignition switch ON Shift lever in any position other than R |
Below 1 V |
|
*a |
Front view of wire harness connector (to Navigation Receiver Assembly) |
| OK | |
REPLACE NAVIGATION RECEIVER ASSEMBLY |
|
|
3. |
CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - PARK/NEUTRAL POSITION SWITCH ASSEMBLY) |
(a) Disconnect the G37 navigation receiver assembly connector.
(b) Disconnect the B42 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 |
|---|---|---|
|
G37-2 (REV) - B42-1 (RL) |
Always |
Below 1 Ω |
|
G37-2 (REV) - Body ground |
Always |
10 kΩ or higher |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - BATTERY) |
(a) Disconnect the B42 park/neutral position switch assembly connector.
|
(b) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
(c) Proceed to the next step based on the check result.
|
Result |
Proceed to |
|---|---|
|
NG |
A |
|
OK (for A750E) |
B |
|
OK (for A750F) |
C |
| A | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| B | |
REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY (forA750E) |
| C | |
REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY (for A750F) |
Vehicle Speed Signal Circuit between Stereo Component Amplifier and Combination
Meter
DESCRIPTION
The stereo component amplifier assembly receives a vehicle speed signal from
the combination meter assembly to control the ASL function.
HINT:
A voltage of 12 V or 5 V is outp ...
Navigation Voice Circuit
DESCRIPTION
This circuit is used when the voice guidance in the navigation system is on or
an incoming cellular phone voice in the "Bluetooth" hands-free system is heard.
Using this circ ...
Other materials about Toyota 4Runner:
Installation
INSTALLATION
PROCEDURE
1. INSTALL HOOD LOCK ASSEMBLY
(a) Apply MP grease to the sliding areas of the hood lock assembly.
(b) Connect the hood lock control cable assembly.
(c) Connect the connector.
(d) Install the hood lock assembly with the 3 ...
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
DTC Code
Detection Item
See page
11
Short in Motor LH
12
Short in Motor RH
21
Short to ...
0.018