Lexus ES manuals

Lexus ES: Indicator (Red) Circuit Short to Ground (B157011,B157013)

DESCRIPTION

This DTC is stored when the DCM (telematics transceiver) detects an open or short in the manual (SOS) switch red indicator circuit of the manual (SOS) switch.

The manual (SOS) switch red indicator illuminates for 2 seconds and goes off when the power switch is turned on (IG). If a malfunction in the safety connect system is detected, the manual (SOS) switch red indicator will illuminate.

However, the manual (SOS) switch red indicator may not illuminate when this DTC is set.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B157011

Indicator (Red) Circuit Short to Ground

Manual (SOS) switch red indicator impedance (Ω) is lower than the malfunction threshold for 10 seconds or more when the power switch is on (IG)

  • DCM (telematics transceiver)
  • Map light sub-assembly (manual (SOS) switch)
  • Harness or connector

B157013

Indicator (Red) Circuit Open

Manual (SOS) switch red indicator impedance (Ω) is higher than the malfunction threshold for 10 seconds or more when the power switch is on (IG)

  • DCM (telematics transceiver)
  • Map light sub-assembly (manual (SOS) switch)
  • Harness or connector

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Safety Connect System.

Click here

HINT:

If DTC B157011 or B157013 is stored, the manual (SOS) switch red indicator may not illuminate when another DTC is stored.

PROCEDURE

1.

CHECK DTC

(a) Turn the power switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the power switch on (IG) and wait for 10 seconds or more.

(d) Turn the Techstream on.

(e) Clear the DTCs.

Body Electrical > Telematics > Clear DTCs

(f) Check for DTCs and check that no DTCs are output.

Body Electrical > Telematics > Trouble Codes

OK:

No DTCs are output.

OK

USE SIMULATION METHOD TO CHECK

NG

2.

INSPECT MAP LIGHT SUB-ASSEMBLY (MANUAL (SOS) SWITCH) (RED INDICATOR)

(a) Remove the map light sub-assembly (manual (SOS) switch).

Click here

*a

Component without harness connected

(Map light sub-assembly (Manual (SOS) Switch))

(b) Connect 2 dry-cell batteries (1.5 V each) in series.

(c) Connect a positive (+) lead from the batteries to terminal 6 (IND1) and a negative (-) lead to terminal 9 (GND3) of the map light sub-assembly (manual (SOS) switch) connector.

(d) Check if the manual (SOS) switch red indicator illuminates.

OK:

Manual (SOS) switch red indicator illuminates.

NG

REPLACE MAP LIGHT SUB-ASSEMBLY (MANUAL (SOS) SWITCH)

OK

3.

CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - MAP LIGHT SUB-ASSEMBLY (MANUAL (SOS) SWITCH))

(a) Disconnect the G128 DCM (telematics transceiver) connector.

(b) Disconnect the P12 map light sub-assembly (manual (SOS) switch) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

G128-4 (IND1) - P12-6 (IND1)

Always

Below 1 Ω

G128-4 (IND1) or P12-6 (IND1) - Body ground

Always

10 kΩ or higher

G128-3 (SIG-) - P12-9 (GND3)

Always

Below 1 Ω

G128-3 (SIG-) or P12-9 (GND3) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

4.

REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (telematics transceiver) with a new one.

Click here

NOTICE:

  • The power switch must be off.
  • Do not exchange the DCM (telematics transceiver) with one from another vehicle.
NEXT

PERFORM DCM ACTIVATION

READ NEXT:

 Indicator (Green) Circuit Short to Ground (B157111,B157113)

DESCRIPTION This DTC is set when the DCM (telematics transceiver) detects an open or short in the manual (SOS) switch green indicator circuit of the manual (SOS) switch. The manual (SOS) switch green

 Customize Parameters

CUSTOMIZE PARAMETERS CUSTOMIZE TELEMATICS SYSTEM (a) Customizing with the Techstream. NOTICE: When the customer requests a change in a function, first make sure that the function can be customized.

 Data List / Active Test

DATA LIST / ACTIVE TEST DATA LIST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a pa

SEE MORE:

 Lost Communication between Drive Motor "A" and HV ECU Circuit Intermittent (P31241F,P312487)

DESCRIPTION The motor generator control ECU, which is built into the inverter with converter assembly, controls the motor (MG2) based on commands from the hybrid vehicle control ECU. The motor generator control ECU (MG ECU) monitors communication data and detects malfunctions. DTC No. Detection

 Reassembly

REASSEMBLY CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH side and LH side. The following procedure is for the LH side. PROCEDURE 1. PRECAUTION NOTICE: After turning the engine switch (for Gasoline Model) or power switch (for HV Model) off, waiting time may be required befor

© 2016-2023 Copyright www.lexguide.net