C2309

P311 HYBRID TRANSMISSION / TRANSAXLE: ELECTRONIC SHIFT LEVER SYSTEM: C2309: Open in B+ Circuit
C2309 - Open in B+ Circuit

DESCRIPTION

Battery voltage will be applied to the +B terminal when the power switch is turned on (IG). When a +B terminal voltage malfunction is detected, the transmission control ECU outputs this DTC.





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
It is not possible to clear the following DTCs using the Techstream: DTCs C2300 (Actuator System Malfunction), C2301 (Shift Changing Time Malfunction), C2303 (Short in Power Source Relay Circuit), C2304 (Open or Short Circuit in U Phase), C2305 (Open or Short Circuit in V Phase), C2306 (Open or Short Circuit in W Phase), C2307 (Power Supply) and C2309 (Open in B+ Circuit). After the repair, it is necessary to disconnect the P CON MAIN fuse and wait for at least 60 seconds to clear the DTCs.

PROCEDURE

1. READ VALUE USING TECHSTREAM (IG(+B) VOLTAGE VALUE)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Enter the following menus: Chassis / Transmission Control / Data List / IG(+B) Voltage Value.

(d) Read the Data List displayed on the Techstream.

Result:





(e) Turn the power switch off.

B -- REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Components
A -- Continue to next step.

2. INSPECT FUSE

(a) Remove the IGCT, IGCT NO. 2 fuse from the engine room junction block assembly.

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





Standard Resistance:





Text in Illustration





(c) Install the IGCT, IGCT NO. 2 fuse.

NG -- REPLACE FUSE
OK -- Continue to next step.

3. READ VALUE USING TECHSTREAM (BATTERY VOLTAGE VALUE)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Enter the following menus: Chassis / Transmission Control / Data List / Battery Voltage Value.

(d) Read the Data List displayed on the Techstream.

Result:





(e) Turn the power switch off.

B -- CHARGE OR REPLACE AUXILIARY BATTERY
A -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL ECU ASSEMBLY - IGCT NO. 2 FUSE)

(a) Disconnect connector A35 from the transmission control ECU assembly.

(b) Remove the IGCT NO. 2 fuse from the engine room junction block assembly.

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





Standard Resistance (Check for Open):





Standard Resistance (Check for Short):





Text in Illustration





NOTICE:
Be careful not to break the fuse holder by forcing the tester probes into it during this inspection.

(d) Install the IGCT NO. 2 fuse.

(e) Connect the transmission control ECU assembly connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- CHECK AND REPAIR POWER SOURCE CIRCUIT