DIAGNOSIS SYSTEM
1. DESCRIPTION
When troubleshooting a vehicle with a diagnosis system, the only difference from the usual troubleshooting procedure is connecting the Techstream to the vehicle and reading various data output from the vehicle's skid control ECU.
The skid control ECU records DTCs when the computer detects a malfunction in the ECU itself or in its circuits.
To check the DTCs, connect the Techstream to the DLC3 on the vehicle. The Techstream can clear the DTCs, activate the various actuators, and check the Freeze Frame Data and Data List.
(a) Check the battery voltage.
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, recharge the battery before proceeding to the next step.
(b) Check the DLC3 (See page ).
2. DIAGNOSIS
(a) If the skid control ECU detects a malfunction, the ABS warning, brake warning, slip indicator, and master warning (for vehicle with the master warning light) lights will come on in order to warn the driver.
(b) The DTCs are simultaneously stored in the memory.
The DTCs can be read by connecting SST between terminals TC and CG of the DLC3
and observing the blinking pattern of the ABS warning and slip indicator lights,
or by connecting the Techstream (See page ).
(c) This system has a Test Mode (signal check) function.
The DTCs can be read by connecting SST between terminals TS and CG of the DLC3
and observing the blinking pattern of the ABS warning and slip indicator lights,
or by connecting the Techstream (See page ).
3. WARNING LIGHT AND INDICATOR LIGHT INITIAL CHECK
(a) Release the parking brake.
NOTICE:
Before releasing the parking brake, move the shift lever to P for safety.
HINT:
When the parking brake is applied or the brake fluid level is low, the brake warning light comes on.
(b) When the ignition switch is turned to ON, check that the ABS warning, brake warning, TRAC OFF indicator, VSC OFF indicator and slip indicator lights all come on for approximately 3 seconds.
HINT:
Trouble Area |
See Procedure |
---|---|
ABS warning light circuit (Remains on) |
|
ABS warning light circuit (Does not come on) |
|
Brake warning light circuit (Remains on) |
|
Brake warning light circuit (Does not come on) |
|
TRAC OFF indicator light circuit (Remains on) |
|
TRAC OFF indicator light circuit (Does not come on) |
|
VSC OFF indicator light circuit (Remains on) |
|
VSC OFF indicator light circuit (Does not come on) |
|
Slip indicator light circuit (Remains on) |
|
Slip indicator light circuit (Does not come on) |
|
AVC-LAN Circuit
DESCRIPTION
Each unit of the navigation system connected to the AVC-LAN (communication bus)
transmits switch signals via AVC-LAN communication.
If a short to +B or short to ground occurs in the AVC-LAN, the navigation system
will not function normally be ...
Front Wiper Rubber
Components
COMPONENTS
ILLUSTRATION
Replacement
REPLACEMENT
PROCEDURE
1. REMOVE FRONT WIPER BLADE
(a) Remove the holder of the front wiper blade.
(b) Remove the front wiper blade from the f ...
Electronic Circuit Inspection Procedure
ELECTRONIC CIRCUIT INSPECTION PROCEDURE
1. BASIC INSPECTION
(a) WHEN MEASURING RESISTANCE OF ELECTRONIC PARTS
(1) Unless otherwise stated, all resistance measurements are standard values
measured at an ambient temperature of 20°C (68°F). Resistance meas ...