Lexus ES: On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT BRAKE BOOSTER ASSEMBLY
(a) Airtightness check
| (1) Start the engine and stop it after 1 or 2 minutes. Slowly depress the brake pedal several times. HINT: If the brake pedal can be depressed nearly to the floor the first time, but on the 2nd and 3rd time cannot be depressed as far, the brake booster assembly is airtight. |  | | *a | Correct | | *b | Incorrect | | *c | 1st | | *d | 2nd | | *e | 3rd | | |
(2) Depress the brake pedal with the engine running, and stop the engine with the brake pedal depressed.
HINT:
If there is no change in the brake pedal reserve distance while holding the brake pedal depressed for 30 seconds, the brake booster assembly is airtight.
(b) Operation check
| (1) Depress the brake pedal several times with the engine switch off and check that there is no change in the brake pedal reserve distance when the brake pedal is depressed. | |
| (2) Depress and hold the brake pedal, then start the engine. HINT: If the brake pedal goes down slightly, operation is normal. | |
READ NEXT:
REASSEMBLY PROCEDURE 1. INSTALL VACUUM WARNING SWITCH ASSEMBLY (a) Install a new check valve grommet to the brake booster assembly. (b) Install the vacuum warning switch assembly to the brake booster
REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during brak
SEE MORE:
INSPECTION PROCEDURE 1. INSPECT POWER WINDOW REGULATOR MOTOR ASSEMBLY (FOR DRIVER DOOR) (a) Connect a positive (+) lead from the auxiliary battery to connector terminal 2. NOTICE: Do not connect a positive (+) lead from the auxiliary battery to any terminal other than terminal 2 to avoid damaging
DIAGNOSTIC TROUBLE CODE CHART Wiper and Washer System DTC No. Detection Item DTC Output from Link B1245 Lost Communication with Wiper ECU LIN Main Body B1279 Lost Communication with Humidity/Rain Sensor LIN Main Body B1370 ECU Malfunction Windshield wiper m
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