B1509

METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: B1509; Open in Ambient Temperature Sensor Circuit; 2013 MY FR-S [03/2012 -]
B1509 - Open in Ambient Temperature Sensor Circuit

DESCRIPTION

The thermistor assembly is installed in the front part of the cooler condenser assembly to display the ambient temperature on the multi-information display in the combination meter assembly and to control the air conditioning auto mode. As the temperature decreases, the resistance increases. As the temperature increases, the resistance decreases.

The combination meter assembly applies a voltage (5 V) to the thermistor assembly and reads the voltage changes as changes in the resistance of the thermistor assembly.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM (AMBIENT TEMPERATURE SENSOR)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Combination Meter / Data List.

(e) According to the display on the Techstream, read the Data List.

Combination Meter





OK:

The display is as specified in the normal condition column.

Result





B -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Problem Symptoms Table

C -- INSPECT THERMISTOR ASSEMBLY
A -- Continue to next step.

2. CHECK FOR DTC

(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

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

OK:

DTC B1509 is not output

NG -- REPLACE COMBINATION METER ASSEMBLY Removal

OK -- END

3. INSPECT THERMISTOR ASSEMBLY

(a) Remove the thermistor assembly Removal.

(b) Inspect the thermistor assembly Testing and Inspection.

NG -- REPLACE THERMISTOR ASSEMBLY Removal
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (THERMISTOR ASSEMBLY - COMBINATION METER ASSEMBLY)

(a) Disconnect the A48 thermistor assembly connector.

(b) Disconnect the D7 combination meter assembly connector.

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

Standard Resistance (Check for Open):





Standard Resistance (Check for Short):





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE COMBINATION METER ASSEMBLY Removal