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Discussion Starter · #1 ·
Hi all

I have a 2009 Sienna and am experiencing the problem described in this old thread. "Manual" Rear Door Doesn't Have Power

My rear door latch stopped working. I first replaced the switch, but that didnt fix the problem. I removed the latch motor and mechanism and discovered it was cracked, so I bought a new one. Throughout the process of replacing the switch and diagnosing the cracked latch, I had consistent power when things were plugged in (pressing switch activated motor, just not sufficiently to open the latch due to the crack). Then all of a sudden, no power whether the new or old motor is plugged in. I am hoping its a fuse issue, but for life of me I can’t figure out which fuse to check based on the description in the above thread or the owners manual. Any help would be appreciated.
 

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Sudden power loss screams a burned out fuse. That post says 5th column (left to right), 2nd row of the engine bay fuse box. Some diagrams I see call that fuse #12 and others (including that post) call it #14. There should be a list of the fuses and what they do in the owners manual. For whatever reason, I can't seem to find an official version anywhere.
 

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Just found this. To me, it looks like it would be fuse #25 for powered rear door. Whereas, #12 controls ECU-B which is for the power sliding doors.

Rectangle Font Parallel Pattern Office equipment


Assignment of the fuses and relay in the Engine Compartment
NameAmpProtected components
1MAIN30Headlights, daytime running light system, "H-LP RL" and "H-LP LL" fuses
2AM 230"INJ", "IGN" and "GAUGE2" fuses
3ETCS10Multiport fuel injection system/sequential multiport fuel injection system
4DRL20Daytime running light system, "H-LP RH" and "H-LP LH" fuses
5DOOR NO.225Power door lock system
6HORN10Horns
7DOME10Personal/interior lights, vanity lights, door courtesy lights, luggage compartment light, engine switch light, multi-information display
8RAD NO.1202003-2006: Audio system, navigation system
8RAD NO.1152007-2010: Audio system
9EFI NO.120Multiport fuel injection system/sequential multiport fuel injection system, "EFI NO.2" fuse
10ALT-S7.5Charging system
11HAZ15Turn signal lights, emergency flashers
12ECU-B10Power sliding door, air conditioning system, power windows, multiplex communication system, meter and gauge, wireless remote control system
13H-LP RL15Right-hand headlight (low beam)
13H-LP RH15Right-hand headlight
14H-LP LL15Left-hand headlight (low beam), front fog lights
14H-LP LH15Left-hand headlight
15RAD NO.330Audio system
16EFI NO.210Multiport fuel injection system/sequential multiport fuel injection system
17A/F25A/F sensor
18SPARE15Spare fuse
19SPARE20Spare fuse
20SPARE30Spare fuse
21SPARE30Spare fuse
22RR2 SEAT50Power third seat
23HTR50Air conditioning system, "A/C" fuse
24FAN50Electric cooling fans
25PBD30Power back door
26R-PSD30Right side power sliding door
27L-PSD30Left side power sliding door
28RR A/C40Rear air conditioning system
29DEF40Rear window defogger, "MIR HTR" fuse
30SPARE7.5Spare fuse
31ALT140Charging system, "RR A/C", "HTR", "FAN", "PBD", "R-PSD", "L-PSD" and "DEF" fuses
32ABS150Anti-lock brake system, traction control system, vehicle stability control system
33ABS230Anti-lock brake system, traction control system, vehicle stability control system
34ST30Starting system
35L-RR2 SEAT30Power third seat
36R-RR2 SEAT30Power third seat
37H-LP RH10Right-hand headlight
37H-LP RL10Right-hand headlight (low beam)
38H-LP LH10Left-hand headlight
38H-LP LL10Left-hand headlight (low beam), front fog lights
39RSE7.5Rear seat entertainment system
40INJ102007-2010: Multiport fuel injection system/ sequential multiport fuel injection system
41--Short Pin
42---
43---
44---
45---
46---
47---
48---
49---
50---
51---
52--Short Pin
Relay
R1Stop lights (BRK)
R2Air fuel ratio sensor (A/F)
R3Circuit opening (C/OPN)
R4Headlight (HEAD)
R5EFI
R6Short Pin
R7Rear windshield defogger (DEFOG)
R8Horn
R9Vehicle stability control (VSC MTR)
R10Vehicle stability control (VSC FAIL)
R11Daytime running light (DRL NO.4)
R12Daytime running light (DRL NO.2)
R13Daytime running light (DRL NO.3)
R14Electric cooling fan (FAN)
R15Rear air conditioning system (RR A/C)
R16Heater (HTR) (manual A/C) Short Pin (automatic A/C)
R17Starter (ST)
R18Air conditioner compressor clutch (MG CLT)
R19-
 

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Discussion Starter · #4 ·
Just found this. To me, it looks like it would be fuse #25 for powered rear door. Whereas, #12 controls ECU-B which is for the power sliding doors.

View attachment 60806

Assignment of the fuses and relay in the Engine Compartment
NameAmpProtected components
1MAIN30Headlights, daytime running light system, "H-LP RL" and "H-LP LL" fuses
2AM 230"INJ", "IGN" and "GAUGE2" fuses
3ETCS10Multiport fuel injection system/sequential multiport fuel injection system
4DRL20Daytime running light system, "H-LP RH" and "H-LP LH" fuses
5DOOR NO.225Power door lock system
6HORN10Horns
7DOME10Personal/interior lights, vanity lights, door courtesy lights, luggage compartment light, engine switch light, multi-information display
8RAD NO.1202003-2006: Audio system, navigation system
8RAD NO.1152007-2010: Audio system
9EFI NO.120Multiport fuel injection system/sequential multiport fuel injection system, "EFI NO.2" fuse
10ALT-S7.5Charging system
11HAZ15Turn signal lights, emergency flashers
12ECU-B10Power sliding door, air conditioning system, power windows, multiplex communication system, meter and gauge, wireless remote control system
13H-LP RL15Right-hand headlight (low beam)
13H-LP RH15Right-hand headlight
14H-LP LL15Left-hand headlight (low beam), front fog lights
14H-LP LH15Left-hand headlight
15RAD NO.330Audio system
16EFI NO.210Multiport fuel injection system/sequential multiport fuel injection system
17A/F25A/F sensor
18SPARE15Spare fuse
19SPARE20Spare fuse
20SPARE30Spare fuse
21SPARE30Spare fuse
22RR2 SEAT50Power third seat
23HTR50Air conditioning system, "A/C" fuse
24FAN50Electric cooling fans
25PBD30Power back door
26R-PSD30Right side power sliding door
27L-PSD30Left side power sliding door
28RR A/C40Rear air conditioning system
29DEF40Rear window defogger, "MIR HTR" fuse
30SPARE7.5Spare fuse
31ALT140Charging system, "RR A/C", "HTR", "FAN", "PBD", "R-PSD", "L-PSD" and "DEF" fuses
32ABS150Anti-lock brake system, traction control system, vehicle stability control system
33ABS230Anti-lock brake system, traction control system, vehicle stability control system
34ST30Starting system
35L-RR2 SEAT30Power third seat
36R-RR2 SEAT30Power third seat
37H-LP RH10Right-hand headlight
37H-LP RL10Right-hand headlight (low beam)
38H-LP LH10Left-hand headlight
38H-LP LL10Left-hand headlight (low beam), front fog lights
39RSE7.5Rear seat entertainment system
40INJ102007-2010: Multiport fuel injection system/ sequential multiport fuel injection system
41--Short Pin
42---
43---
44---
45---
46---
47---
48---
49---
50---
51---
52--Short Pin
Relay
R1Stop lights (BRK)
R2Air fuel ratio sensor (A/F)
R3Circuit opening (C/OPN)
R4Headlight (HEAD)
R5EFI
R6Short Pin
R7Rear windshield defogger (DEFOG)
R8Horn
R9Vehicle stability control (VSC MTR)
R10Vehicle stability control (VSC FAIL)
R11Daytime running light (DRL NO.4)
R12Daytime running light (DRL NO.2)
R13Daytime running light (DRL NO.3)
R14Electric cooling fan (FAN)
R15Rear air conditioning system (RR A/C)
R16Heater (HTR) (manual A/C) Short Pin (automatic A/C)
R17Starter (ST)
R18Air conditioner compressor clutch (MG CLT)
R19-
Thanks. That seems to be in something called the fusable link assembly along with a bunch of other fuses and the whole assembly, rather than an individual fuse, would have to be replaced. From a visual standpoint, the fuse doesnt look blown. There are some references in my manual to 10a fuses in the box in the interior of the car also controlling the power back door so I will try those first.
 

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Discussion Starter · #5 ·
Good news, power is back. I noted in the original post about this problem that the author mentioned locking and unlocking the doors as having possibly reset the circuit, so I tried that. . At first it didnt work, but then I hit the unlock button when the doors were already unlocked and I heard a faint click from the back. I pressed the rear switch and the motor actuated. I have no idea why this worked, and I havent installed the new motor yet so the door stilldoesnt open, but I have power again so things are looking up.
 
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