DTC C2310: Open or Short Circuit in Battery Circuit: Procedure

INSPECT FUSE (P CON MAIN)

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

Fig 1: Identifying Fuse (P CON Main)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard Resistance

Tester Connection	Condition	Specified Condition
P CON MAIN fuse	Always	Below 1 Ω

TEXT IN ILLUSTRATION

*1	Engine Room Junction Block Assembly
*2	P CON MAIN Fuse

NG → REPLACE FUSE (P CON MAIN)

OK: Go to next step

READ VALUE USING TECHSTREAM (BATTERY VOLTAGE VALUE)

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Enter the following menus: Chassis / Transmission Control / Data List / Battery Voltage Value.

Read the Data List displayed on the Techstream.

Result

Tester Display	Condition	Specified Condition
Battery Voltage Value	Always	9 to 14 V

NG → See step 3

OK → See step 4

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

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

Fig 2: Checking Harness And Connector (Transmission Control ECU Assembly - P CON Main Fuse)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard Resistance (Check for Open)

Tester Connection	Switch Condition	Specified Condition
A23-15 (BATT) - 2 (P CON MAIN fuse)	Power switch off	Below 1 Ω

Standard Resistance (Check for Short)

Tester Connection	Switch Condition	Specified Condition
A23-15 (BATT) or 2 (P CON MAIN fuse) - Body ground and other terminals	Power switch off	10 kΩ or higher

TEXT IN ILLUSTRATION

*1	Engine Room Junction Block Assembly
*2	P CON MAIN Fuse Connector of Engine Room Junction Block Assembly
*a	Front view of wire harness connector (to Transmission Control ECU Assembly)

NOTE:

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

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK → CHECK AND REPAIR POWER SOURCE CIRCUIT