Lexus ES manuals

Lexus ES: "CHK" message(s) are displayed on the SIGNAL CHECK screen.

DESCRIPTION

On the SIGNAL CHECK screen, it is possible to check if the signals sent to the parking assist ECU are normal.

Click here

HINT:

  • On the SIGNAL CHECK screen, "OK" (blue) is displayed for items with a normal inspection result or input state.
  • On the SIGNAL CHECK screen, "CHK" (red) is displayed for items with an abnormal inspection result or input state.
  • Displayed items may differ depending on vehicle specifications.

Item

Signal Input Method

Detail

DTC Output when Abnormal Result is Displayed

Signal Receiver

CAN

CAN communication

CAN communication signal

DTC is output

Related ECUs

SHIFT

Vehicle wire harness

Shift position switch signal

DTC is not output

BKUP LP relay

CAMERA SW

Vehicle wire harness

Panoramic view monitor switch signal input state

DTC is not output

Panoramic View Monitor Switch

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • When "!" is displayed on the multi-display assembly after the cable is disconnected from the negative (-) auxiliary battery terminal, correct the steering angle neutral point.

    Click here

  • Depending on the parts that are replaced or operations that are performed during vehicle inspection or maintenance, calibration of other systems as well as the panoramic view monitor system may be needed.

    Click here

PROCEDURE

1.

CHECK DISPLAY CHECK MODE

(a) Check which items display on the signal check screen.

Result

Proceed to

"CAMERA SW" displays "CHK" (red)

A

"CAN" displays "CHK" (red)

B

"SHIFT" displays "CHK" (red)

C

B

GO TO CAN COMMUNICATION SYSTEM

C

GO TO STEP 4

A

2.

CHECK HARNESS AND CONNECTOR (PANORAMIC VIEW MONITOR SWITCH - PARKING ASSIST ECU AND BODY GROUND)

(a) Disconnect the G32 panoramic view monitor switch connector.

(b) Disconnect the N44 parking assist ECU connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

N44-15 (BLSW) - G32-4 (ECU)

Always

Below 1 Ω

G32-2 (E) - Body ground

Always

Below 1 Ω

N44-15 (BLSW) or G32-4 (ECU) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.

INSPECT PANORAMIC VIEW MONITOR SWITCH

(a) Remove the panoramic view monitor switch.

Click here

(b) Inspect the panoramic view monitor switch.

Click here

OK

REPLACE PARKING ASSIST ECU

NG

REPLACE PANORAMIC VIEW MONITOR SWITCH

4.

CHECK BACK-UP LIGHT

(a) Check that the back-up light comes on.

OK:

The back-up light comes on.

NG

GO TO LIGHTING SYSTEM (EXT)

OK

5.

CHECK HARNESS AND CONNECTOR (REVERSE SIGNAL)

(a) Disconnect the N44 parking assist ECU connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

N44-14 (REV) - Body ground

Power switch on (IG), shift lever in R

11 to 14 V

N44-14 (REV) - Body ground

Power switch on (IG), shift lever not in R

Below 1 V

OK

REPLACE PARKING ASSIST ECU

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

READ NEXT:

 BSM Buzzer Sound Request Signal Malfunction (C2A5C)

DESCRIPTION This DTC is stored when the rear television camera assembly receives an invalid communication signal from the blind spot monitor sensor RH. DTC No. Detection Item DTC Detection Cond

 BSM Buzzer Malfunction (C2A5D)

DESCRIPTION This DTC is stored when the rear television camera assembly receives an RCTA buzzer circuit malfunction signal from the blind spot monitor sensor RH. DTC No. Detection Item DTC Dete

 Back Camera Response Malfunction (C2A6A)

DESCRIPTION During self diagnosis of the parking assist ECU, the parking assist ECU sends display mode ID signals to the rear television camera assembly. This DTC is stored when the output of the rear

SEE MORE:

 DC/DC Converter Current Sensor Signal Stuck In Range (P0E512A)

DTC SUMMARY MALFUNCTION DESCRIPTION This DTC is stored if the value of the reactor current sensor does not change. The cause of this malfunction may be one of the following: Area Main Malfunction Description Inverter Inverter internal circuit malfunction Malfunction in ECU that contr

 Steering Angle Sensor Failure (C1626)

DESCRIPTION This DTC is stored if the clearance warning ECU assembly receives a signal via CAN communication from the steering sensor that indicates an internal malfunction. DTC No. Detection Item DTC Detection Condition Trouble Area C1626 Steering Angle Sensor Failure A fail flag i

© 2016-2023 Copyright www.lexguide.net