Lexus ES manuals

Lexus ES: Emergency Call Switch Circuit Short to Ground (B15C511,B15C513)

DESCRIPTION

If the DCM (telematics transceiver) detects an error in the communication between the DCM (telematics transceiver) and the map light sub-assembly (manual (SOS) switch) as a result of the DCM (telematics transceiver) self check, this DTC will be stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B15C511

Emergency Call Switch Circuit Short to Ground

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

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

B15C513

Emergency Call Switch Circuit Open

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

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

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

PROCEDURE

1.

CHECK DTC

(a) Turn the engine switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the engine 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)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

13 (SIG1) - 9 (GND3)

Manual (SOS) switch not operated

410 to 414 Ω

13 (SIG1) - 9 (GND3)

Manual (SOS) switch operated

81 to 83 Ω

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

G128-21 (SIG1) - P12-13 (SIG1)

Always

Below 1 Ω

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

Always

Below 1 Ω

G128-21 (SIG1) or P12-13 (SIG1) - Body ground

Always

10 kΩ or higher

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

PERFORM DCM ACTIVATION

READ NEXT:

 Telephone Main Antenna Circuit Short to Ground (B15CB11,B15CB13)

DESCRIPTION This DTC is stored when the DCM (telematics transceiver) detects an open or a short in the telephone antenna (main) circuit. DTC No. Detection Item DTC Detection Condition Trouble

 Backup Battery Internal Electronic Failure (B15CC49)

DESCRIPTION This DTC is set when the DCM (telematics transceiver) detects one of the following: The mobilephone battery voltage drops or the mobilephone battery malfunctions. The mobilephone batt

 Telephone Sub Antenna Circuit Short to Ground (B153711,B153713)

DESCRIPTION These DTCs are stored when a malfunction occurs in the telephone and GPS antenna assembly (for Front Side). DTC No. Detection Item DTC Detection Condition Trouble Area B153711

SEE MORE:

 Disassembly

DISASSEMBLY PROCEDURE 1. REMOVE OIL FILLER CAP SUB-ASSEMBLY (a) Remove the oil filler cap sub-assembly from the cylinder head cover sub-assembly LH. (b) Remove the oil filler cap gasket from the oil filler cap sub-assembly. 2. REMOVE SPARK PLUG Click here 3. REMOVE PC

 Generator Control Module Position Sensor REF Power Source Circuit Voltage Out of Range (P06B01C,...,P313487)

DESCRIPTION The motor generator control ECU (MG ECU), which is built into the inverter with converter assembly, monitors its internal operation and will store DTCs if it detects a malfunction. If any of the following DTCs are output, replace the inverter with converter assembly. DTC No. Detecti

© 2016-2024 Copyright www.lexguide.net