B1410

THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM: B1410; Transponder Communication Circuit; 2013 MY FR-S [03/2012 -]
B1410 - Transponder Communication Circuit

DESCRIPTION

* The main body ECU (network gateway ECU) stores this code if a communication problem is detected between the key and the main body ECU (network gateway ECU).





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
* If the main body ECU (network gateway ECU) is replaced, refer to Registration Programming and Relearning.
* Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1. CHECK FOR DTC

(a) Using Techstream, check that the DTC is stored with all the registered keys Reading and Clearing Diagnostic Trouble Codes.

Result





NG -- REPLACE KEY THAT STORED DTC
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (BATTERY, BODY GROUND)

(a) Disconnect the A73 and D6 main body ECU (network gateway ECU) connectors.

(b) Disconnect the 3A, 3B and 3C instrument panel junction block assembly connectors.

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









Standard Voltage:





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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

(a) Remove the instrument panel junction block assembly Removal.

(b) Remove the main body ECU (network gateway ECU) from the instrument panel junction block assembly.

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









Standard Resistance:





NG -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Removal
OK -- Continue to next step.

4. INSPECT TRANSPONDER KEY AMPLIFIER (POWER SOURCE)

(a) Install the main body ECU (network gateway ECU) to the instrument panel junction block assembly.

(b) Install the instrument panel junction block assembly Removal.

(c) Reconnect the 3A, 3B and 3C instrument panel junction block assembly connectors.

(d) Disconnect the D54 transponder key amplifier connector.

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









Standard Voltage:





Result





B -- CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY AMPLIFIER - BODY GROUND)
A -- Continue to next step.

5. CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY AMPLIFIER - INSTRUMENT PANEL JUNCTION BLOCK)

(a) Disconnect the A73 main body ECU (network gateway ECU) connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE MAIN BODY ECU (NETWORK GATEWAY ECU) Removal

6. CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY AMPLIFIER - BODY GROUND)

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

Standard Resistance:





Result





B -- CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY AMPLIFIER - INSTRUMENT PANEL JUNCTION BLOCK)
A -- Continue to next step.

7. CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY AMPLIFIER - INSTRUMENT PANEL JUNCTION BLOCK)

(a) Disconnect the A73 main body ECU (network gateway ECU) connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE MAIN BODY ECU (NETWORK GATEWAY ECU) Removal

8. CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY AMPLIFIER - INSTRUMENT PANEL JUNCTION BLOCK)

(a) Disconnect the A73 main body ECU (network gateway ECU) connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

9. REPLACE TRANSPONDER KEY AMPLIFIER

(a) Temporarily replace the transponder key amplifier with a new or known good one Removal.

NEXT -- Continue to next step.

10. CHECK FOR DTC

(a) Key is inserted into ignition key cylinder.

(b) Turn the ignition switch off or ACC.

(c) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

OK:

DTC B1410 is not output

NG -- CHECK FOR DTC

OK -- END (TRANSPONDER KEY AMPLIFIER WAS DEFECTIVE)

11. CHECK FOR DTC

(a) Replace the keys in which the DTC B1410 is stored, and perform the registration.

(b) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

OK:

DTC B1410 is not output

NG -- REPLACE MAIN BODY ECU (NETWORK GATEWAY ECU) Removal

OK -- END (KEY WAS DEFECTIVE)