Toyota Tacoma 2015-2018 Service Manual: Reverse Signal Circuit
DESCRIPTION
The radio and display receiver assembly*1 or navigation receiver assembly*2 receives a reverse signal from the park/neutral position switch*3 or the back-up light switch assembly*4.
- *1: w/o Navigation System
- *2: w/ Navigation System
- *3: for Automatic Transmission
- *4: for Manual Transmission
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
|
1. |
CONFIRM MODEL |
(a) Choose the model to be inspected.
Result|
Result |
Proceed to |
|---|---|
|
w/o Navigation System |
A |
|
w/ Navigation System |
B |
| B | .gif) |
GO TO STEP 8 |
|
.gif)
|
2. |
INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY (REVERSE SIGNAL) |
|
(a) Disconnect the radio and display receiver assembly connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
R31-2 (REV) - Body ground |
Ignition switch ON, shift lever in not R |
Below 1 V |
|
Ignition switch ON, shift lever in R |
11 to 14 V |
|
*a |
Rear view of wire harness connector (to Radio and Display Receiver Assembly) |
(c) Reconnect the radio and display receiver assembly connector.
| OK | |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
|
3. |
SYSTEM CHECK |
(a) Check the vehicle specifications.
Result|
Result |
Proceed to |
|---|---|
|
for Automatic Transmission |
A |
|
for Manual Transmission |
B |
| B | |
GO TO STEP 6 |
|
|
4. |
INSPECT PARK/NEUTRAL POSITION SWITCH (IG SIGNAL) |
|
(a) Disconnect the park/neutral position switch connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
P1-2 (RB) - Body ground |
Ignition switch ON |
11 to 14 V |
|
*a |
Front view of wire harness connector (to Park/Neutral Position Switch) |
(c) Reconnect the park/neutral position switch connector.
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
5. |
CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - PARK/NEUTRAL POSITION SWITCH) |
(a) Disconnect the R31 radio and display receiver assembly connector.
(b) Disconnect the P1 park/neutral position switch connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
R31-2 (REV) - P1-1 (RL) |
Always |
Below 1 Ω |
|
R31-2 (REV) - Body ground |
Always |
10 kΩ or higher |
|
Result |
Proceed to |
|---|---|
|
NG |
A |
|
OK (for AC60F) |
B |
|
OK (for AC60E) |
C |
(d) Reconnect the radio and display receiver assembly connector.
(e) Reconnect the park/neutral position switch connector.
| A | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| B | |
REPLACE PARK/NEUTRAL POSITION SWITCH |
| C | |
REPLACE PARK/NEUTRAL POSITION SWITCH |
|
6. |
INSPECT BACK-UP LIGHT SWITCH ASSEMBLY (IG SIGNAL) |
|
(a) Disconnect the back-up light switch assembly connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
B1-2 - Body ground |
Ignition switch ON |
11 to 14 V |
|
*A |
for 2GR-FKS |
|
*B |
for 2TR-FE |
|
*a |
Front view of wire harness connector (to Back-up Light Switch Assembly) |
(c) Reconnect the back-up light switch assembly connector.
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
7. |
CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - BACK-UP LIGHT SWITCH ASSEMBLY) |
(a) Disconnect the R31 radio and display receiver assembly connector.
(b) Disconnect the B1 back-up light switch assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
R31-2 (REV) - B1-1 |
Always |
Below 1 Ω |
|
R31-2 (REV) - Body ground |
Always |
10 kΩ or higher |
|
Result |
Proceed to |
|---|---|
|
NG |
A |
|
OK (for R156F) |
B |
|
OK (for RC62F) |
C |
(d) Reconnect the radio and display receiver assembly connector.
(e) Reconnect the back-up light switch assembly connector.
| A | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| C | |
REPLACE BACK-UP LIGHT SWITCH ASSEMBLY |
|
8. |
INSPECT NAVIGATION RECEIVER ASSEMBLY (REVERSE SIGNAL) |
|
(a) Disconnect the navigation receiver assembly connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
N25-2 (REV) - Body ground |
Ignition switch ON, shift lever in not R |
Below 1 V |
|
Ignition switch ON, shift lever in R |
11 to 14 V |
|
*a |
Rear view of wire harness connector (to Navigation Receiver Assembly) |
(c) Reconnect the navigation receiver assembly connector.
| OK | |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
|
9. |
SYSTEM CHECK |
(a) Check the vehicle specifications.
Result|
Result |
Proceed to |
|---|---|
|
for Automatic Transmission |
A |
|
for Manual Transmission |
B |
| B | |
GO TO STEP 12 |
|
|
10. |
INSPECT PARK/NEUTRAL POSITION SWITCH (IG SIGNAL) |
|
(a) Disconnect the park/neutral position switch connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
P1-2 (RB) - Body ground |
Ignition switch ON |
11 to 14 V |
|
*a |
Front view of wire harness connector (to Park/Neutral Position Switch) |
(c) Reconnect the park/neutral position switch connector.
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
11. |
CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - PARK/NEUTRALPOSITION SWITCH) |
(a) Disconnect the N25 navigation receiver assembly connector.
(b) Disconnect the P1 park/neutral position switch connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
N25-2 (REV) - P1-1 (RL) |
Always |
Below 1 Ω |
|
N25-2 (REV) - Body ground |
Always |
10 kΩ or higher |
|
Result |
Proceed to |
|---|---|
|
NG |
A |
|
OK (for AC60F) |
B |
|
OK (for AC60E) |
C |
(d) Reconnect the navigation receiver assembly connector.
(e) Reconnect the park/neutral position switch connector.
| A | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| B | |
REPLACE PARK/NEUTRAL POSITION SWITCH |
| C | |
REPLACE PARK/NEUTRAL POSITION SWITCH |
|
12. |
INSPECT BACK-UP LIGHT SWITCH ASSEMBLY (IG SIGNAL) |
|
(a) Disconnect the back-up light switch assembly connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
B1-2 - Body ground |
Ignition switch ON |
11 to 14 V |
|
*A |
for 2GR-FKS |
|
*B |
for 2TR-FE |
|
*a |
Front view of wire harness connector (to Back-up Light Switch Assembly) |
(c) Reconnect the back-up light switch assembly connector.
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
13. |
CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - BACK-UP LIGHT SWITCH ASSEMBLY) |
(a) Disconnect the N25 navigation receiver assembly connector.
(b) Disconnect the B1 back-up light switch assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
N25-2 (REV) - B1-1 |
Always |
Below 1 Ω |
|
N25-2 (REV) - Body ground |
Always |
10 kΩ or higher |
|
Proceed to |
|---|
|
OK |
|
NG |
(d) Reconnect the navigation receiver assembly connector.
(e) Reconnect the back-up light switch assembly connector.
| OK | |
REPLACE BACK-UP LIGHT SWITCH ASSEMBLY |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
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DESCRIPTION
This DTC is stored if the radio and display receiver assembly*1 or navigation
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lines between the rad ...
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DESCRIPTION
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radio and display receiver assembly*1 or navigation receiver assembly*2.
*1: w/o Navigation Syste ...
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