Etcs Harness Is Open Or Shorted 2012 Toyota Rav4

(d) Remove the AM2 fuse and IG2 relay.

(e) Measure the resistance between the terminals. Standard resistance (Check for open)

Tester Connections

Specified Conditions

A9-28 (IGSW) - Engine room No. 1 relay block IG2 relay terminal 5

Below 1 Q

Engine room No. 1 relay block IG2 relay terminal 2 - Body ground

Below 1 Q

Positive (+) battery cable - Engine room relay block No. 1 AM2 fuse terminal 1

Below 1 Q

Positive (+) battery cable - Engine room relay block No. 1 IG2 relay terminal 3

Below 1 Q

E3-7 (AM2) - Engine room No. 1 relay block AM2 fuse terminal 2

Below 1 Q

E3-6 (IG2) - Engine room No. 1 relay block IG2 relay terminal 1

Below 1 Q

Standard resistance (Check for short)

Tester Connections

Specified Conditions

A9-28 (IGSW) or Engine room No. 1 relay block IG2 relay terminal 5 -Body ground

10 kQ or higher

Positive (+) battery cable or Engine room No. 1 relay block AM2 fuse terminal 1 - Body ground

10 kQ or higher

Positive (+) battery cable or Engine room No. 1 relay block IG2 relay terminal 3 - Body ground

10 kQ or higher

E3-7 (AM2) or Engine room No. 1 relay block AM2 fuse terminal 2 -Body ground

10 kQ or higher

E3-6 (IG2) or Engine room No. 1 relay block IG2 relay terminal 1 - Body ground

10 kQ or higher

(f) Reinstall the relay and fuse.

(g) Reconnect the connectors.

REPAIR OR REPLACE HARNESS OR CONNECTOR

INSPECT IGNITION SWITCH (See page ES-261)

REPLACE IGNITION SWITCH

CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - ECM, BATTERY, BODY GROUND)

Wire Harness Side:

(A^ ECM Connector

>-

=

-Ox

jL

Front View

A115671E09

Wire Harness Side:

El m

A127769E03

(a) Disconnect the A9 ECM connector.

(b) Remove the integration relay from the engine room No. 1 relay block.

(c) Disconnect the integration relay connector.

(d) Remove the P/I fuse from the engine room No. 1 relay block.

(e) Check the resistance between the terminals. Standard resistance (Check for open)

Tester Connections

Specified Conditions

A9-2 (+B) - 1A-4

Below 1 Q

A9-1 (+B2) - 1A-4

Below 1 Q

A9-44 (MREL) - 1A-2

Below 1 Q

Engine room relay block No. 1 P/I fuse terminal 2 - 1C-1

Below 1 Q

1A-3 - Body ground

Below 1 Q

Standard resistance (Check for short)

Tester Connections

Specified Conditions

A9-2 (+B) or 1A-4 - Body ground

10 kQ or higher

A9-1 (+B2) or 1A-4 - Body ground

10 kQ or higher

A9-44 (MREL) or 1A-2 - Body ground

10 kQ or higher

Engine room No. 1 relay block P/I fuse terminal 2 or 1C-1 - Body ground

10 kQ or higher

(f) Reconnect the connectors.

(g) Reinstall the integration relay and P/I fuse.

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPAIR OR REPLACE ENGINE ROOM NO. 1 RELAY BLOCK

VC Output Circuit

DESCRIPTION

The ECM constantly generates 5 V power from the battery voltages supplied to the +B (BATT) terminal to operate the microprocessor. The ECM also provides this power to the sensors through the VC output circuit.

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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