Toyota Corolla Cross: Steering Pad Switch Circuit
DESCRIPTION
The combination meter assembly and steering pad switch assembly are connected via direct line.
- The multi-information display in the combination meter assembly is operated using the switches of the steering pad switch assembly.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
- When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
- When replacing the combination meter assembly, update the ECU security key.
Click here
.gif)
PROCEDURE
|
1. | INSPECT STEERING PAD SWITCH ASSEMBLY |
Click here
| NG | .gif) | REPLACE STEERING PAD SWITCH ASSEMBLY |
|
.gif)
| 2. |
INSPECT SPIRAL CABLE SUB-ASSEMBLY |
Click here
| NG | |
REPLACE SPIRAL CABLE SUB-ASSEMBLY |
|
| 3. |
CHECK COMBINATION METER ASSEMBLY (OUTPUT VOLTAGE) |
|
*a | Front view of wire harness connector (to Spiral Cable Sub-assembly) |
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection | Switch Condition |
Specified Condition |
|---|---|---|
|
I82-11 (+DP) - Body ground |
Ignition switch ON | 4.8 to 5.2 V |
|
I82-10 (+DP2) - Body ground |
Ignition switch ON | 4.8 to 5.2 V |
| NG | | GO TO STEP 5 |
|
| 4. |
CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - BODY GROUND) |
(a) Disconnect the I55 radio and display receiver assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
I55-20 (SWG) - I82-4 (EAU) |
Always | Below 1 Ω |
|
I55-1 (GND1) - Body ground |
Always | Below 1 Ω |
| OK | | REPLACE RADIO AND RECEIVER ASSEMBLY |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
| 5. |
CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - COMBINATION METER ASSEMBLY) |
(a) Disconnect the I5 combination meter assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
I82-11 (+DP) - I5-29 (MSM+) |
Always | Below 1 Ω |
|
I82-10 (+DP2) - I5-12 (MSTI) |
Always | Below 1 Ω |
|
I82-11 (+DP) or I5-29 (MSM+) - Body ground |
Always | 10 kΩ or higher |
|
I82-10 (+DP2) or I5-12 (MSTI) - Body ground |
Always | 10 kΩ or higher |
| OK | | REPLACE COMBINATION METER ASSEMBLY |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
READ NEXT:
Engine Oil Level Sensor Circuit
DESCRIPTION The combination meter assembly and engine oil level sensor are connected via direct line. The combination meter assembly determines the engine oil level based on the engine oil level senso
Speed Signal Circuit
DESCRIPTION HINT: This circuit is used for the systems connected to terminal +S. This signal is not used for combination meter assembly operation. Combination meter assembly components such as the spe
SEE MORE:
Power Source Control System Missing Message (B278C87)
DESCRIPTION
When an internal malfunction is detected in the certification ECU (smart key
ECU assembly), this DTC is stored.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
B278C87
Power Source Control System Miss
Operation Check
OPERATION CHECK CHECK CUSTOMIZE PARAMETERS (a) The operation check below is based on the non-customized initial condition of the vehicle. (However, make sure that "ACC Customize" is set to "ON" using the multi-display.)
Click here CHECK PUSH-BUTTON START FUNCTION
(a) Check the push-button star
