Lexus ES manuals

Lexus ES: GPS Antenna Connection Malfunction(short) (B15C0,B15C1)

DESCRIPTION

These DTCs are stored when a malfunction occurs in the navigation antenna assembly.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B15C0

GPS Antenna Connection Malfunction(short)

GPS Antenna Connection Malfunction (short)

  • Navigation antenna assembly
  • Antenna cord sub-assembly
  • Navigation ECU

B15C1

GPS Antenna Connection Malfunction(break)

GPS Antenna Connection Malfunction (break)

  • Navigation antenna assembly
  • Antenna cord sub-assembly
  • Navigation ECU

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 Navigation System.
  • When replacing the navigation ECU, always replace it with a new one. If a navigation ECU which was installed to another vehicle is used, the following may occur:
    • A communication malfunction DTC may be stored.
    • The navigation ECU may not operate normally.

PROCEDURE

1.

CHECK DTC

(a) Clear the DTCs.

Body Electrical > Navigation System > Clear DTCs

(b) Recheck for DTCs and check that no DTCs are output.

Body Electrical > Navigation System > Trouble Codes

OK:

No DTCs are output.

OK

USE SIMULATION METHOD TO CHECK

NG

2.

INSPECT ANTENNA CORD SUB-ASSEMBLY

(a) Remove the antenna cord sub-assembly.

Click here

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

*a

Component without harness connected

(Antenna Cord Sub-assembly)

*a

Component without harness connected

(Antenna Cord Sub-assembly)

Standard Resistance:

Tester Connection

Condition

Specified Condition

A-3 - B-1

Always

Below 1 Ω

A-3a - B-1a

Always

Below 1 Ω

A-3 or B-1 - Body ground

Always

10 kΩ or higher

A-3a or B-1a - Body ground

Always

10 kΩ or higher

NG

REPLACE ANTENNA CORD SUB-ASSEMBLY

OK

3.

INSPECT NAVIGATION ANTENNA ASSEMBLY

(a) Remove the navigation antenna assembly.

Click here

(b) Inspect the navigation antenna assembly.

Click here

OK

REPLACE NAVIGATION ECU

NG

REPLACE NAVIGATION ANTENNA ASSEMBLY

READ NEXT:

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 Speaker Output Short (B15C3)

DESCRIPTION This DTC is stored when a malfunction occurs in the speakers. DTC No. Detection Item DTC Detection Condition Trouble Area B15C3 Speaker Output Short A short is detected in

 MOST Communication Malfunction (B15D0)

DESCRIPTION Navigation system components communicate with each other via MOST communication. If a line short or short to ground occurs in a MOST communication line, communication will not be possible

SEE MORE:

 Installation

INSTALLATION 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. INSTALL REAR COMBINATION LIGHT ASSEMBLY (for TMMK Made) 2. INSTALL REAR BUMPER UPPER RETAINER (for TMMK Made) Click here 3. INSTALL REAR B

 Removal

REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during black out tape removal/installation are shown below. Necessary Procedure After Parts Removed/Installed/

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