Front Accessory Power Socket Circuit Troubleshooting

1.

Problem verification:

Problem verification

?1.	Test the front accessory power socket.

Does the front accessory power socket work?


	YES

Intermittent failure, the system is OK at this time. Check for loose or poor connections.?


	NO

Go to step 2.

2.

Fuse check:

Fuse check

?1.

Check the following fuses.

Fuse	No. A12-1 (60 A)
Location	Under-hood fuse/relay box

Fuse	No. B37 (7.5 A)
Fuse	No. B40 (15 A)
Location	Under-dash fuse/relay box

Is each fuse OK?


	YES

Go to step 3.


	NO

Replace the fuse. If the fuse blows again, repair a short to ground in the No. A12-1 (60 A), No. B37 (7.5 A), and/or No. B40 (15 A) fuse circuit(s).?

3.

Front accessory power socket relay check:

Front accessory power socket relay check

?1.	Remove the front accessory power socket relay from the under-dash fuse/relay box, and test it.

Is the relay OK?


	YES

Go to step 4.


	NO

Replace the front accessory power socket relay, then recheck.?

4.

Open wire check (+B F/BOX MAIN2 line) 1:

Open wire check (+B F/BOX MAIN2 line) 1

?1.

Measure the voltage between test points 1 and 2.

Test condition	OFF mode Front accessory power socket relay: disconnected
Test circuit	+B F/BOX MAIN2
Test point 1	Under-dash fuse/relay box connector F (18P) No. 1 (RED)
Test point 2	Body ground

Is there battery voltage?


	YES

Go to step 5.


	NO

Repair an open or high resistance in the wire.?

5.

Open wire check (+B F/BOX MAIN2 line) 2:

Open wire check (+B F/BOX MAIN2 line) 2

?1.

Measure the voltage between test points 1 and 2.

Test condition	OFF mode Front accessory power socket relay: disconnected
Test circuit	+B F/BOX MAIN2
Test point 1	Front accessory power socket relay 4P socket No. 2
Test point 2	Body ground

Is there battery voltage?


	YES

Go to step 6.


	NO

Replace the under-dash fuse/relay box.?

6.

Determine possible failure area (front accessory power socket relay switch side circuit, front accessory power socket relay coil side circuit):

Determine possible failure area (front accessory power socket relay switch side circuit, front accessory power socket relay coil side circuit)

?1.

Connect terminals A and B with a jumper wire.

Terminal A	Front accessory power socket relay 4P socket No. 1
Terminal B	Front accessory power socket relay 4P socket No. 2

Does the front accessory power socket work?


	YES

Go to step 7.


	NO

Go to step 10.

7.

Open wire check (+B FR ACC SOCKET line):

Open wire check (+B FR ACC SOCKET line)

?1.

Measure the voltage between test points 1 and 2.

Test condition	OFF mode Front accessory power socket relay: disconnected Front accessory power socket relay 4P socket No. 1 and No. 2: jumped
Test circuit	+B FR ACC SOCKET
Test point 1	Front accessory power socket relay 4P socket No. 4
Test point 2	Body ground

Is there battery voltage?


	YES

Go to step 8.


	NO

Replace the under-dash fuse/relay box.?

8.

Open wire check (GND line) 1:

Open wire check (GND line) 1

?1.

Check for continuity between test points 1 and 2.

Test condition	IG LOCK (0) or OFF mode Console accessory power socket relay: disconnected
Test circuit	GND
Test point 1	Console accessory power socket relay 4P socket No. 4 (BRN)
Test point 2	Body ground

Is there continuity?


	YES

GND wire is OK. Replace the front accessory power socket relay.?


	NO

Go to step 9.

9.

Open wire check (GND line) 2:

Open wire check (GND line) 2

?1.

Disconnect the following connector.

Under-dash fuse/relay box connector D (44P)

?2.

Check for continuity between test points 1 and 2.

Test condition	IG LOCK (0) or OFF mode Front accessory power socket relay: disconnected Under-dash fuse/relay box connector D (44P): disconnected
Test circuit	GND
Test point 1	Under-dash fuse/relay box connector D (44P) No. 16 (BLK)
Test point 2	Body ground

Is there continuity?


	YES

GND wire is OK. Replace the under-dash fuse/relay box.?


	NO

Repair an open or high resistance in the ground wire or poor ground (G601).?

10.

Open wire check (ACCESSORY POWER SOCKET line):

Open wire check (ACCESSORY POWER SOCKET line)

?1.	Remove the front accessory power socket.

?2.

Measure the voltage between test points 1 and 2.

Test condition	IG LOCK (0) or OFF mode Front accessory power socket relay: disconnected Front accessory power socket relay 4P socket No. 1 and No. 2: jumped
Test circuit	ACCESSORY POWER SOCKET
Test point 1	Front accessory power socket 2P connector No. 2 (WHT)
Test point 2	Body ground

Is there battery voltage?


	YES

Go to step 11.


	NO

Repair an open or high resistance in the wire.?

11.

Open wire check (GND line):

Open wire check (GND line)

?1.

Check for continuity between test points 1 and 2.

Test condition	OFF mode Front accessory power socket relay: disconnected Front accessory power socket relay 4P socket No. 1 and No. 2: jumped
Test circuit	GND
Test point 1	Front accessory power socket 2P connector No. 1 (BLK)
Test point 2	Body ground

Is there continuity?


	YES

Replace the front accessory power socket.


	NO

Repair an open or high resistance in the ground wire or poor ground (G505).?