C2310

P311 HYBRID TRANSMISSION / TRANSAXLE: ELECTRONIC SHIFT LEVER SYSTEM: C2310: Open or Short Circuit in Battery Circuit
C2310 - Open or Short Circuit in Battery Circuit

DESCRIPTION

The battery voltage is constantly applied to terminal BATT. The terminal BATT voltage is used to power the transmission control ECU memory. The transmission control ECU outputs this DTC when it detects a malfunction related to terminal BATT.

HINT
When there is an open or short in the BATT circuit, information on the actuator position (park (P) engaged or park (P) not engaged) stored in the transmission control ECU is cleared every time the power switch is turned off. Therefore, the ECU works to recognize the position each time the power switch is turned on (IG). As a result, the time from when the power switch is turned on (IG) until "READY ON" is indicated may become longer than normal.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT FUSE (P CON MAIN)

(a) Remove the P CON MAIN 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 P CON MAIN fuse.

NG -- REPLACE FUSE (P CON MAIN)
OK -- Continue to next step.

2. 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.

NG -- CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL ECU ASSEMBLY - P CON MAIN FUSE)

OK -- REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Components

3. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL ECU ASSEMBLY - P CON MAIN FUSE)

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

(b) Disconnect the P CON MAIN 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 P CON MAIN fuse.

(e) Connect the transmission control ECU assembly connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- CHECK AND REPAIR POWER SOURCE CIRCUIT