Lexus ES manuals

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.

*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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 Open in One Side of Bus 4 Branch Line

DESCRIPTION When the CAN bus main lines are normal (no open, short to ground, short to +B or short between lines) and there is an ECU or sensor on the "Communication Bus Check" screen that is indicated as not communicating or whose connection status on the "Communication Bus Check" screen changes in

 Hybrid/EV Battery Precharge Contactor Circuit Short to Ground (P0AE411)

DESCRIPTION The SMRs (System Main Relays) are the relays that connect or disconnect the high-voltage system in accordance with commands from the hybrid vehicle control ECU. There are 3 SMRs and 1 system main resistor. SMRB, SMRP, SMRG and the system main resistor are located in the HV battery juncti

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