Toyota Tacoma 2015-2018 Service Manual: Steering Pad Switch Circuit
DESCRIPTION
The forward recognition camera receives a lane departure alert switch signal from the steering pad switch assembly.
WIRING DIAGRAM
for 2TR-FE
for 2GR-FKS
CAUTION / NOTICE / HINT
NOTICE:
The vehicle is equipped with a Supplemental Restraint System (SRS) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the precaution for Supplemental Restraint System.
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PROCEDURE
|
1. |
INSPECT STEERING PAD SWITCH ASSEMBLY |
(a) Remove the steering pad switch assembly.
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(b) Inspect the steering pad switch assembly.
Click here
| NG | .gif) |
REPLACE STEERING PAD SWITCH ASSEMBLY |
|
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|
2. |
INSPECT SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY |
(a) Remove the spiral cable with sensor sub-assembly.
Click here
(b) Inspect the spiral cable with sensor sub-assembly.
Click here
| NG | |
REPLACE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY |
|
|
3. |
CHECK HARNESS AND CONNECTOR (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY - FORWARD RECOGNITION CAMERA) |
(a) Disconnect the S8 spiral cable with sensor sub-assembly connector.
(b) Disconnect the F46 forward recognition camera connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
S8-12 (DIST) - F46-3 (LKSW) |
Always |
Below 1 Ω |
|
S8-12 (DIST) or F46-3 (LKSW) - Body ground |
Always |
10 kΩ or higher |
(d) Connect the F46 forward recognition camera connector.
(e) Connect the S8 spiral cable with sensor sub-assembly connector.
|
Result |
Proceed to |
|---|---|
|
OK (for 2TR-FE) |
A |
|
OK (for 2GR-FKS) |
B |
|
NG |
C |
| B | |
GO TO STEP 5 |
| C | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
CHECK HARNESS AND CONNECTOR (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY - ECM) |
(a) Disconnect the S8 spiral cable with sensor sub-assembly connector.
(b) Disconnect the E20 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
S8-2 (ECC) - E20-21 (ECCS) |
Always |
Below 1 Ω |
|
S8-2 (ECC) or E20-21 (ECCS) - Body ground |
Always |
10 kΩ or higher |
(d) Connect the S8 spiral cable with sensor sub-assembly connector.
(e) Connect the E20 ECM connector.
| OK | |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
5. |
CHECK HARNESS AND CONNECTOR (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY - BODY GROUND) |
(a) Disconnect the S8 spiral cable with sensor sub-assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
S8-2 (ECC) - Body ground |
Always |
Below 1 Ω |
(c) Connect the S8 spiral cable sub-assembly connector.
| OK | |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Vehicle Speed Tolerance Malfunction (C1AA2)
DESCRIPTION
The forward recognition camera receives vehicle speed tolerance signals from
the combination meter assembly. If the combination meter assembly detects a vehicle
speed tolerance malfun ...
Indicator Circuit
DESCRIPTION
The forward recognition camera sends indicator illumination request signals to
the combination meter assembly via CAN communication.
CAUTION / NOTICE / HINT
NOTICE:
When replacing th ...
Other materials:
Cellular Phone Registration Failure, Phone Directory Transfer Failure
PROCEDURE
1.
CHECK OPERATION
(a) Place the cellular phone close to the navigation receiver assembly.
(b) Check if the cellular phone can be registered.
OK:
The cellular phone can be registered.
OK
NORMAL OPERATION
...
VSC Buzzer Circuit
DESCRIPTION
The skid control ECU (brake actuator assembly) is connected to the combination
meter via CAN communication.
The combination meter has a built-in VSC warning buzzer:
Sounds intermittently to inform the driver if the temperature of brake
actuator assembly has increased exce ...
New Key cannot be Registered
DESCRIPTION
If an electrical key transmitter could not be newly registered, wave interference
or a malfunction of the certification ECU (smart key ECU assembly), electrical key
transmitter sub-assembly, steering lock ECU (steering lock actuator or UPR bracket
assembly) or electrical key and T ...
