Toyota Tundra Service Manual: Lost Communication with Meter (B1324)

DESCRIPTION

This DTC is stored when a communication error occurs between the navigation receiver assembly and combination meter assembly.

DTC Code

DTC Detection Condition

Trouble Area

B1324

After the navigation receiver assembly receives a registration information signal, which is sent by the combination meter assembly when the ignition switch is ACC, 1 or more times, the navigation receiver assembly cannot receive the signal for 30 seconds or more.

  • Combination meter assembly
  • Navigation receiver assembly
  • Harness or connector

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

When replacing the combination meter assembly, make sure to replace it with a new one.

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - COMBINATION METER ASSEMBLY)

(a) Disconnect the J136 navigation receiver assembly connector.

(b) Disconnect the J28 combination meter assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J136-3 (CNH1) - J28-18 (MSCH)

Always

Below 1 Ω

J136-4 (CNL1) - J28-19 (MSCL)

Always

Below 1 Ω

J136-3 (CNH1) - Body ground

Always

10 kΩ or higher

J136-4 (CNL1) - Body ground

Always

10 kΩ or higher

J136-3 (CNH1) - J136-4 (CNL1)

Always

10 kΩ or higher

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

J136-3 (CNH1) - Body ground

Always

Below 1 V

J136-4 (CNL1) - Body ground

Always

Below 1 V

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

2.

INSPECT COMBINATION METER ASSEMBLY

(a) Remove the combination meter assembly.

Click here

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

18 (MSCH) - 19 (MSCL)

Always

108 to 132 Ω

NG

REPLACE COMBINATION METER ASSEMBLY

OK

3.

INSPECT NAVIGATION RECEIVER ASSEMBLY

(a) Remove the navigation receiver assembly.

Click here

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 (CNH1) - 4 (CNL1)

Always

108 to 132 Ω

Result

Proceed to

OK

A

NG (for Column Shift Type)

B

NG (for Floor Shift Type)

C

B

REPLACE NAVIGATION RECEIVER ASSEMBLY

C

REPLACE NAVIGATION RECEIVER ASSEMBLY

A

4.

CHECK COMBINATION METER ASSEMBLY

(a) Replace the combination meter assembly with a new one.

Click here

(b) Clear the DTCs.

Click here

(c) Check for DTCs.

OK:

No DTCs are output.

Result

Proceed to

OK

A

NG (for Column Shift Type)

B

NG (for Floor Shift Type)

C

A

END (COMBINATION METER ASSEMBLY IS DEFECTIVE)

B

REPLACE NAVIGATION RECEIVER ASSEMBLY

C

REPLACE NAVIGATION RECEIVER ASSEMBLY

    AV Signal Stoppage (Low Battery Voltage) (B158F)

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