Toyota Camry (XV70): Distance Control Switch Circuit
DESCRIPTION
The vehicle-to-vehicle distance control switch is used to set the distance for vehicle-to-vehicle distance control mode. The vehicle-to-vehicle distance control switch is installed in the steering pad switch assembly. The vehicle-to-vehicle distance set value can be changed by operating the vehicle-to-vehicle distance control switch while the dynamic radar cruise control system is controlling vehicle speed in vehicle-to-vehicle distance control mode.
WIRING DIAGRAM
for A25A-FKS
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.
Click here
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- When replacing the forward recognition camera, replace it with a new one. If a forward recognition camera which was installed to another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle and a DTC may be stored.
- When the forward recognition camera is replaced with a new one or the windshield glass is replaced or removed/installed, make sure to read Before Starting Adjustment, then perform optical axis alignment for the forward recognition camera and clear the vehicle control history for each system.
HINT:
Forward recognition camera axis alignment can be performed by using either One Time Recognition, Sequential Recognition or Driving Adjustment.
One Time Recognition: Click here
Sequential Recognition: Click here
Driving Adjustment: Click here
- Before replacing the ECM, refer to Registration.
w/ Smart Key System: Click here
w/o Smart Key System: Click here
PROCEDURE
|
1. | READ VALUE USING TECHSTREAM (Radar Cruise2) |
(a) Read the Data List according to the display on the Techstream.
Powertrain > Radar Cruise2 > Data List|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Vehicle-to-vehicle Distance Control Switch |
Vehicle-to-vehicle distance control switch signal |
ON or OFF | ON: Vehicle-to-vehicle distance control switch pushed OFF: Vehicle-to-vehicle distance control switch not pushed |
- |
|
Tester Display |
|---|
| Vehicle-to-vehicle Distance Control Switch |
OK:
The value of the Data List item changes according to the operation of the vehicle-to-vehicle distance control switch.
| OK | .gif) | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
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| 2. |
INSPECT STEERING PAD SWITCH ASSEMBLY |
Click here
| NG | | REPLACE STEERING PAD SWITCH ASSEMBLY |
|
| 3. |
INSPECT SPIRAL CABLE SUB-ASSEMBLY |
Click here
| NG | | REPLACE SPIRAL CABLE SUB-ASSEMBLY |
|
| 4. |
CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - FORWARD RECOGNITION CAMERA, ECM AND BODY GROUND) |
(a) Disconnect the V6*1, V21*2 forward recognition camera connector.
- *1: Before Nov. 2021 Production
- *2: From Nov. 2021 Production
(b) Disconnect the A24 ECM connector (for A25A-FKS).
(c) Before Nov. 2021 Production:
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for A25A-FKS:|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
K22-6 (DIST) - V6-3 (LKSW) |
Always | Below 1 Ω |
|
K22-2 (ECC) - A24-28 (ECCS) |
Always | Below 1 Ω |
|
K22-6 (DIST) or V6-3 (LKSW) - Body ground |
Always | 10 kΩ or higher |
|
K22-2 (ECC) or A24-28 (ECCS) - Body ground |
Always | 10 kΩ or higher |
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
K22-6 (DIST) - V6-3 (LKSW) |
Always | Below 1 Ω |
|
K22-2 (ECC) - Body ground |
Always | Below 1 Ω |
|
K22-6 (DIST) or V6-3 (LKSW) - Body ground |
Always | 10 kΩ or higher |
(d) From Nov. 2021 Production:
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for A25A-FKS:|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
K22-6 (DIST) - V21-3 (LKSW) |
Always | Below 1 Ω |
|
K22-2 (ECC) - A24-28 (ECCS) |
Always | Below 1 Ω |
|
K22-6 (DIST) or V21-3 (LKSW) - Body ground |
Always | 10 kΩ or higher |
|
K22-2 (ECC) or A24-28 (ECCS) - Body ground |
Always | 10 kΩ or higher |
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
K22-6 (DIST) - V21-3 (LKSW) |
Always | Below 1 Ω |
|
K22-2 (ECC) - Body ground |
Always | Below 1 Ω |
|
K22-6 (DIST) or V21-3 (LKSW) - Body ground |
Always | 10 kΩ or higher |
|
Result | Proceed to |
|---|---|
|
OK (for A25A-FKS) | A |
|
OK (for 2GR-FKS) | B |
|
NG | C |
| B |
| REPLACE FORWARD RECOGNITION CAMERA |
| C |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 5. |
CHECK ECM (ECM TERMINALS) |
|
*a | Component without harness connected (ECM) |
(a) Disconnect the A24 ECM connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
A24-28 (ECCS) - A24-10 (E1) |
Always | Below 1 Ω |
| OK | | REPLACE FORWARD RECOGNITION CAMERA |
| NG | | REPLACE ECM
|
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