DESCRIPTION
- The steering pad switch assembly outputs the on/off signal and various control signals to the hybrid vehicle control ECU.
- The hybrid vehicle control ECU performs cruise control according to the signals received from the steering pad switch assembly.
WIRING DIAGRAM
 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 
- Before replacing the hybrid vehicle control ECU, refer to Registration.
Click here
PROCEDURE |
1. | READ VALUE USING TECHSTREAM |
| (a) Connect the Techstream to the DLC3. |
 |
|
*1 | Steering Pad Switch Assembly | |
*a | Cruise Control Main Switch | |
*b | -SET Switch | |
*c | +RES Switch | |
*d | CANCEL Switch | | |
(b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Powertrain / Radar Cruise 1 / Data List.
(e) Read the Data List according to the display on the Techstream. Powertrain > Radar Cruise1 > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note | |
Cancel Switch | CANCEL switch status |
ON or OFF | ON: CANCEL switch pushed
OFF: CANCEL switch not pushed |
- | | -SET Switch |
-SET switch status | ON or OFF |
ON: -SET switch pushed OFF: -SET switch not pushed |
- | | +RES Switch |
+RES switch status | ON or OFF |
ON: +RES switch pushed OFF: +RES switch not pushed |
- | | Cruise Main Switch Operation Condition |
Cruise control main switch status |
ON or OFF | ON: Cruise control main switch pushed
OFF: Cruise control main switch not pushed |
- | Powertrain > Radar Cruise1 > Data List
|
Tester Display | | Cancel Switch | |
-SET Switch | | +RES Switch | |
Cruise Main Switch Operation Condition |
OK: The value of each measurement item changes according to the operation of the steering pad switch assembly.
| OK |
 | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
NG |
 | |
| 2. |
INSPECT STEERING PAD SWITCH ASSEMBLY | (a) Remove the steering pad switch assembly.
Click here (b) Inspect the steering pad switch assembly.
Click here
| NG |
| REPLACE STEERING PAD SWITCH ASSEMBLY |
|
OK | |
| |
| 3. |
INSPECT SPIRAL CABLE SUB-ASSEMBLY | (a) Remove the spiral cable sub-assembly.
Click here (b) Inspect the spiral cable sub-assembly.
Click here
| NG |
| REPLACE SPIRAL CABLE SUB-ASSEMBLY |
|
OK | |
| |
| 4. |
CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - HYBRID VEHICLE CONTROL ECU AND BODY GROUND) |
(a) Disconnect the G17 spiral cable sub-assembly connector. (b) Disconnect the G46 hybrid vehicle control ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
G17-13 (CCS) - G46-28 (CCS) |
Always | Below 1 Ω | |
G17-2 (ECC) - Body ground |
Always | Below 1 Ω | |
G17-13 (CCS) or G46-28 (CCS) - Body ground |
Always | 10 kΩ or higher |
(d) Connect the G46 hybrid vehicle control ECU connector. (e) Connect the G17 spiral cable sub-assembly connector.
| OK |
| REPLACE HYBRID VEHICLE CONTROL ECU |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR | | 
