Lexus ES: Fail-safe Chart
FAIL-SAFE CHART
FAIL-SAFE FUNCTION
(a) When a malfunction occurs in the tire pressure warning system, the tire pressure warning light illuminates after blinking for 1 minute to inform the driver of the system failure.
(b) As a result of this, tire pressure monitoring is disabled and a DTC is stored in the tire pressure warning ECU and receiver.
(c) When there is a system malfunction, the value of each related tire is not displayed.
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| *a | Example |
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Data List / Active Test
DATA LIST / ACTIVE TEST READ DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any part
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Tire Pressure Warning ECU and Receiver DTC No. Detection Item Note Link B1247 Tire Pressure Monitor Receiver Communication Stop This DTC is for main body
Tire Pressure Monitor Receiver Communication Stop (B1247)
DESCRIPTION The main body ECU (multiplex network body ECU) and tire pressure warning ECU and receiver communicate by direct line. If a malfunction occurs in this communication signal, B1247 is output
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System Voltage Circuit Short to Ground or Open (P056014)
DESCRIPTION The battery supplies electricity to the ECM even when the engine switch is off. This power allows the ECM to store data such as DTC history and freeze frame data. If the battery voltage falls below a minimum level, the stored ECM data will be cleared and the ECM will determine that there
Inspection
INSPECTION PROCEDURE 1. INSPECT DRIVE MODE SELECT SWITCH (COMBINATION SWITCH ASSEMBLY) (a) Inspect the "Normal" mode switch: (1) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition 2 (B) - 7 (GND)
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