Power Source Mode does not Change to ON (ACC)

DESCRIPTION

When the engine switch is pushed with the electrical key in the cabin, the power management control ECU receives signals to change the power source mode.

HINT:

To allow use of the Techstream to inspect the push-button start function when the power source mode is off, repeat opening and closing any of the doors. Opening and closing a door establishes communication between the Techstream and the power management control ECU. (Opening and closing a door can also be simulated by operating a door courtesy light switch.)

WIRING DIAGRAM

Refer to DTC B2274 (See page ).

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU)

See page

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU)

OK

1. CHECK HARNESS AND CONNECTOR

See page

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

1. INSPECT ACC RELAY

See page

NG

REPLACE ACC RELAY

OK

1. CHECK HARNESS AND CONNECTOR

See page

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

1. CHECK HARNESS AND CONNECTOR

See page

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

1. CHECK POWER MANAGEMENT CONTROL ECU

(a) Reconnect the all connectors.

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
D43-19 (ACCD) - Body ground	Engine switch off	Below 1 V
D43-19 (ACCD) - Body ground	Engine switch on (IG)	Output voltage at terminal AM21 or AM22 -2 V or more

Text in Illustration

*1	Components with harness connected (Power Management Control ECU)

OK

REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)

NG

REPLACE POWER MANAGEMENT CONTROL ECU