Lexus ES manuals

Lexus ES: Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

Adaptive Variable Suspension System

DTC No.

Detection Item

Warning Indicate

Memory

Link

C1715

Front Acceleration Sensor RH Malfunction

Does not come on

Yes

C1716

Front Acceleration Sensor LH Malfunction

Does not come on

Yes

C1717

Rear Acceleration Sensor Malfunction

Does not come on

Yes

C1731

FR Damping Force Control Actuator Circuit

Does not come on

Yes

C1732

FL Damping Force Control Actuator Circuit

Does not come on

Yes

C1733

RR Damping Force Control Actuator Circuit

Does not come on

Yes

C1734

RL Damping Force Control Actuator Circuit

Does not come on

Yes

C1781

Suspension Control ECU Malfunction

Does not come on

Yes

C1783

Front Wheels Speed Sensor Signal Malfunction

Does not come on

Yes

C1784

Steering Sensor Signal Malfunction

Does not come on

Yes

(Under some of the detection conditions (sensor power +B open malfunction is detected), DTC is not stored.)

C1786

Master Cylinder Pressure Circuit

Does not come on

Yes

C1787

(Horizontality) G Sensor Malfunction

Does not come on

Yes

C1789

Vehicle Identification Malfunction

Does not come on

Yes

(Under some of the detection conditions (control map non-retrieval is not stored), DTC is not stored.)

C1796

(Up&Down)G Sensor FR

Test mode

(Test mode)

C1797

(Up&Down)G Sensor FL

Test mode

(Test mode)

C1798

(Up&Down)G Sensor Rear

Test mode

(Test mode)

U0100

Lost Communication With ECM/PCM "A"

Does not come on

Yes

U0101

Lost Communication with TCM

Does not come on

Yes

U0122

Lost Communication With Vehicle Dynamics Control Module

Does not come on

Yes

U0124

Lost Communication with Lateral Acceleration Sensor Module

Does not come on

Yes

U0126

Lost Communication with Steering Angle Sensor Module

Does not come on

Yes

U1103

Lost Communication with Stop and Start Control Module

Does not come on

Yes

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 FR Damping Force Control Actuator Circuit (C1731-C1734)

DESCRIPTION The absorber control actuator changes the damping force depending on absorber control ECU signals. DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate

 Suspension Control ECU Malfunction (C1781)

DESCRIPTION If a malfunction in the absorber control ECU is detected, DTC C1781 is stored. DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory C1781

 Front Wheels Speed Sensor Signal Malfunction (C1783)

DESCRIPTION The speed sensors monitor the speed of the wheels and send an appropriate speed signal to the absorber control ECU through the skid control ECU (brake actuator assembly). If a malfunction

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 Front Passenger Side Power Window Switch

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 Front Side Marker Light Circuit

DESCRIPTION When the light control switch is in the tail or head position, the main body ECU (multiplex network body ECU) sends an illumination request signal to the headlight ECU sub-assembly to illuminate the front side marker lights. WIRING DIAGRAM for LED Type Turn Signal Light for Bulb Type Tu

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