- Meter/gauge system (speed signal)
- CAN communication system
- Tire pressure warning ECU
| Last Modified: 11-27-2007 | 1.6 C | |
| Service Category: Suspension | Section: Tire Pressure Monitoring | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000000XNA03TX |
| Title: TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: DESCRIPTION (2008 LX570) | ||
|
DTC |
C2191/91 |
Vehicle Speed Signal Error (Test Mode DTC) |
DESCRIPTION
The tire pressure warning ECU receives speed signals from the combination meter via CAN communication. This DTC is stored upon entering test mode, and cleared when a vehicle speed signal of 20 km/h (12 mph) is output for 3 seconds or more. This DTC is stored only in test mode.
|
DTC Code |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
C2191/91 |
The test mode procedure is performed. |
|
INSPECTION PROCEDURE
NOTICE:
- When replacing the tire pressure warning ECU, read the IDs stored in the old ECU using the Techstream and write them down before removal.
-
It is necessary to perform initialization
after registration
of the transmitter IDs into the tire pressure warning ECU after the ECU and/or the tire pressure warning valve and transmitter has been replaced.
PROCEDURE
|
1. |
CHECK DTC (VEHICLE STABILITY CONTROL SYSTEM) |
(a) Check if DTCs for the vehicle stability control system are output
.
OK:
No DTCs for vehicle stability control system are output.
|
|
2. |
CHECK DTC (METER/GAUGE SYSTEM) |
(a) Check if DTCs for the meter/gauge system are output
.
OK:
No DTCs for meter/gauge system are output.
|
|
3. |
CHECK VEHICLE SPEED SIGNAL (DATA LIST) |
(a) Turn the engine switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the engine switch on (IG) and the Techstream on.
(d) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
(e) Check that the values by referring to the table below.
Tire Pressure Monitor
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
Vehicle Speed |
Vehicle speed reading/ min.: 0 km/h (0 mph) max.: 255 km/h (158 mph) |
Actual vehicle speed |
The speed is indicated on the combination meter. |
OK:
The vehicle speed displayed on the Techstream changes depending on the actual vehicle speed.
|
|
|