Replace Electronic Engine Control (EEC) Fuse?

[BigWaylon]

Mom just called with some questions about her ‘09 Highlander. Two lights on the dash:



She took it to AutoZone and they gave her this paper:



She did actually find the gas gap loose. When she opened the door it fell down hanging by the cord. Whether or not that’s the actual issue or not is TBD.

But I’ve searched online and looked at all the fuse box diagrams and don’t see anything that says EEC. Lots of other electronic something something, but not engine control. Is it going to be called something else? Is it a special fuse hidden away somewhere for owners not to be able to access? Anybody here with access to Toyota stuff, please let me know.




Assignment of the fuses in the Passenger Compartment (2008, 2009, 2010)

№	Name	Ampere rating [A]	Circuit
1	P/SEAT	30	Power seat
2	POWER	30	Power windows
3	RR DOOR RH	25	Power windows
4	RR DOOR LH	25	Power windows
5	FR FOG	15	Front fog lights
6	OBD	7,5	On-board diagnosis system
7	FR DEF	25	Windshield wiper deicer
8	STOP	10	Stop lights, enhanced vehicle stability control system
9	DOOR NO.2	25	Power windows
10	AM1	7,5	Starting system
11	RR FOG	7,5	No circuit
12	A/C NO. 1	10	Air conditioning system
13	FUEL OPN	7,5	No circuit
14	S/ROOF	30	Electric moon roof
15	TAIL	15	Parking lights, tail lights, license plate lights, front fog lights, trailer lights
16	PANEL	7,5	Glove box light emergency flashers, audio system, outside rear view mirror defoggers, clock, power door lock system, seat heaters, rear seat entertainment system, enhanced vehicle stability control system, instrument panel light control dial, electronic controlled transmission switch, automatic transmission, downhill assist control system, steering switches
17	ECU IG NO.1	10	Multiplex communication system, electric moon roof, electronically controlled automatic transmission system, power back door, seat heaters, tire pressure warning system, electronic power steering, automatic transmission
18	ECU IG NO.2	7,5	Enhanced vehicle stability control system
19	A/C NO.2	10	Air conditioning system
20	WASH	20	Windshield wipers and washer
21	S-HTR	20	Seat heaters
22	GAUGE NO.1	10	Audio system, outside rear view mirror defoggers, back-up lights, charging system, emergency flashers, traction control system, instrument panel light control dial, windshield wiper deicer
23	FR WIP	30	Windshield wipers and washer
24	RR WIP	15	Rear window wiper and washer
25	IGN	10	Multiport fuel injection system/sequential multiport fuel injection system, steering lock system, antilock brake system, smart key system, SRS airbag system
26	GAUGE NO.2	7,5	Gauges and meters, back monitor
27	ECU-ACC	7,5	Power rear view mirror, shift lock system, smart key system
28	ACC SOCK NO.1	10	Power outlet
29	ACC SOCK NO.2	20	Power outlet
30	RADIO NO.2	7,5	Audio system, clock, rear seat entertainment system, charging system, interior lights, personal lights
31	MIR HTR	15	Outside rear view mirror defoggers

Assignment of the fuses in the Engine Compartment (2008, 2009, 2010)

№	Name	Ampere rating [A]	Circuit
1	SPARE	7,5	Spare fuse
2	SPARE	15	Spare fuse
3	SPARE	25	Spare fuse
4	DEF RLY	10	Rear window defogger
5	MIR HTR	20	Outside rear view mirror defoggers
6	P/OUT	20	Power outlet
7	DOOR 1	25	Multiplex communication system
8	EFI NO.2	10	Multiport fuel injection system/sequential multiport fuel injectionsystem
9	EFI NO.3	10	Multiport fuel injection system/sequential multiport fuel injectionsystem
10	INJ NO.1	15	Starting system
11	INJ NO.2	10	Starting system
12	HTR	50	Air conditioning system
13	VSC NO.1	50	Enhanced vehicle stability control system
14	FAN MAIN	50	Electric cooling fan
15	VSC NO.2	30	Enhanced vehicle stability control system
16	PTC NO.1	50	PTC heater
17	PTC NO.2	30	PTC heater
18	PTC NO.3	30	PTC heater
19	RR CLR	40	Air conditioning system
20	RR DEF	30	Rear window defogger
21	PBD	30	Power back door
22	ALT	140	MIR HTR, P/OUT, DOOR 1, HTR, RR DEF, FAN MAIN, ABS NO.1, PTC NO.1, RR CLR, PTC NO.2, PTC NO.3, ABS NO.2, PBD
23	EPS	80	Electric power steering
24	ST	30	Starting system
25	CRT	10	Rear seat entertainment system
26	RADIO1	15	Audio system
27	ECU-B	10	Steering sensor, gauges and meters, clock, air conditioning system, main body ECU, wireless remote control, smart key system, power back door, onboard diagnosis system
28	DOME	10	Vanity lights, personal lights, interior light, gauges and meters, engine switch light, door courtesy lights, power back door
29	AMP	15	Audio system
30	TOWING	30	Trailer lights
31	IG2	25	INJ NO.1, INJ NO.2
32	STR LOCK	20	Steering lock system
33	EFI MAIN	25	EFI NO.2, EFI NO.3
34	HAZ	15	Turn signal lights
35	G/H	10	Power door lock system, multiplex communication system
36	ALT-S	7,5	Charging system
37	AM2	7,5	Multiplex communication system
38	H-LP LH	15	Left-hand headlight (high beam)
39	H-LP RH	15	Right-hand headlight (high beam)
40	H-LP LL	15	Left-hand headlight (low beam)
41	H-LP RL	15	Right-hand headlight (low beam)
42	HORN	10	Horn
43	EFI NO.1	10	Multiport fuel injection system/sequential multiport fuel injection system, smart key system
44	ETCS	10	Multiport fuel injection system/sequential multiport fuel injection system, electronic throttle control system
45	A/F	20	Air fuel ratio sensor
46	S-HORN	7,5	Horn

№	Name	Ampere rating [A]	Circuit
1	INV-W/P	15	No circuit
2	IGCT NO.2	7,5	No circuit
3	A/C-D	10	No circuit

 

[LeeMajors]

18 and 27

 

[RetiredUSNChief]

You know what gets me about the EEC fuse?

I don't think the car would run if the EEC had no power...correct me if I'm wrong here.

Reset your computer and see if the codes clear and don't come back.

 

[Carolinatlc]

It's probably just the fuel cap and will clear on its own after she drives it some. In my personal experience, Toyota and Subaru like to make extra lights come on to get peoples attention better.

I have a code reader and a multimeter and am at home today. I could check the fuses out if needed.

 

[Frack N Cylons]

The report from AZ is just regurgitating known causes for that code. I wouldn't put much stock in them.

The car wouldn't run without the computer.

 

[BigWaylon]

It's probably just the fuel cap and will clear on its own after she drives it some. In my personal experience, Toyota and Subaru like to make extra lights come on to get peoples attention better.

I have a code reader and a multimeter and am at home today. I could check the fuses out if needed.

AZ checked the codes but didn’t clear them. I have a couple code readers but you’re closer. I just texted her and she said she was home all day.

If you’re willing to run over there and reset it, and maybe check the fuses (Shane mentioned two), we’d both appreciate it. 👍🏼

 

[Carolinatlc]

Will do. It will probably be around 3pm or so.

 

[Les White]

For those without, a $5 copy of Torque Pro and a $20 bluetooth OBDII adapter really can't be beat.

 

[Frack N Cylons]

For those without, a $5 copy of Torque Pro and a $20 bluetooth OBDII adapter really can't be beat.

View attachment 421651

Great combo. This setup has saved me a bunch of headaches.

On my camping trip last year, the Olds started shifting crazy and had no power to speak of. While still driving, I was able to plug in the adapter and had my copilot look up the code that came back as a probable throttle position sensor.

We found a parts store en route, changed it in the parking lot, and had a nice trip. 👍

 

[Les White]

Great combo. This setup has saved me a bunch of headaches.

On my camping trip last year, the Olds started shifting crazy and had no power to speak of. While still driving, I was able to plug in the adapter and had my copilot look up the code that came back as a probable throttle position sensor.

We found a parts store en route, changed it in the parking lot, and had a nice trip. 👍

Be careful with that. Some cars will turn off while scanning for codes. My 01 F350 7.3 is one of those and without the power steering and power brakes the truck becomes a barely controllable 8500lb missile.