Power Source Mode does not Change to ON (ACC)

2GR-FSE STARTING: SMART ACCESS SYSTEM WITH PUSH-BUTTON START: Power Source Mode does not Change to ON (ACC)

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

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. INSPECT FUSE (AM2)
(a) Remove the AM2 fuse from the cowl side J/B RH.
(b) Measure the resistance of the fuse.
Standard resistance:
Below 1 Ohms
NG -- REPLACE FUSE
OK -- Continue to next step.
2. CHECK CONNECTORS
(a) Check that the connectors are securely connected and the terminals are not deformed or loose.
OK:
The connectors are securely connected and the terminals are not deformed or loose.
NG -- REPAIR OR REPLACE CONNECTORS
OK -- Continue to next step.
3. INSPECT WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND)

(a) Disconnect the 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 -- Continue to next step.
4. INSPECT COWL SIDE JUNCTION BLOCK RH (ACC RELAY, PWR POINT RELAY)
(a) Disconnect the cowl side J/B RH connectors.

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

NG -- REPLACE FAULTY J/B AND CHECK POWER SOURCE CONTROL ECU
OK -- Continue to next step.
5. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU OR BATTERY - COWL SIDE J/B RH)
(a) Measure the resistance of the wire harness side connector.

Standard resistance:

(b) Measure the voltage of the wire harness side connector.
Standard voltage:

NG -- REPLACE FAULTY WIRE HARNESS OR CONNECTOR AND CHECK POWER SOURCE CONTROL ECU
OK -- Continue to next step.
6. INSPECT POWER SOURCE CONTROL ECU

(a) Reconnect the connector.
(b) Measure the voltage of the wire harness side connector.
Standard voltage:

NG -- REPLACE POWER SOURCE CONTROL ECU
OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR (COWL SIDE J/B - EACH SYSTEM)
7. REPLACE FAULTY J/B AND CHECK POWER SOURCE CONTROL ECU

(a) Replace a faulty relay or J/B and then connect the power source control ECU connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:

NG -- REPLACE POWER SOURCE CONTROL ECU
OK -- END
8. REPLACE FAULTY WIRE HARNESS OR CONNECTOR AND CHECK POWER SOURCE CONTROL ECU

(a) Repair or replace a faulty wire harness or connector and then connect the power source control ECU connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:

NG -- REPLACE POWER SOURCE CONTROL ECU
OK -- END