C2309

P410 HYBRID TRANSMISSION / TRANSAXLE: ELECTRONIC SHIFT LEVER SYSTEM: C2309: Open in B+ Circuit
C2309 - Open in B+ Circuit

DESCRIPTION

Auxiliary 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 assembly stores this DTC.





WIRING DIAGRAM

Refer to the wiring diagram for DTC C2307 C2307.

INSPECTION PROCEDURE

NOTICE:
- It may not be possible to clear the following DTCs using the Techstream: DTC 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). In such cases, disconnect the P CON MAIN fuse and wait for at least 60 seconds to clear the DTCs after the repair.
- After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work Service Precautions.

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 fuse and 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 fuse and 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 Battery: Components
A -- Continue to next step.

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

(a) Disconnect connector A21 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