B22A8

POWER SOURCE / WIRING: ELECTRIC POWER CONTROL SYSTEM: B22A8: VB Terminal Voltage
B22A8 - VB Terminal Voltage

DESCRIPTION

The electric power control ECU inputs the battery voltage. The electric power control ECU receives several signals and detects the battery condition, and performs load control and generator control.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM (BATTERY VOLTAGE)

(a) Using the Techstream, read the Data List.

Electric Power Control





OK:

11 to 14 V

NG -- INSPECT FUSE (VSSR)

OK -- REPLACE PASSENGER SIDE JUNCTION BLOCK (ELECTRIC POWER CONTROL ECU)

2. INSPECT FUSE (VSSR)

(a) Remove the VSSR fuse from the engine room No. 1 relay block.

(b) Measure the resistance of the fuse.

Standard resistance:





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

3. CHECK ELECTRIC POWER CONTROL ECU (VB+ INPUT VOLTAGE)





(a) Disconnect the A69 ECU connector.

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

Standard voltage:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE PASSENGER SIDE JUNCTION BLOCK (ELECTRIC POWER CONTROL ECU)