*Title should read UZS157
Hi all,
I got my hands on a Crown Majesta non-immobilized ECU. Luckily, it had the three rightmost plugs still in it, so I'm able to see which wires were connected from factory as well as the wire colours.
Click on the images below for full size.
![32825269366_e6fbdb5738_b.jpg 32825269366_e6fbdb5738_b.jpg](https://www.lextreme.com/forums/data/attachments/23/23154-45928893a9e37f3c6847d1ccf9aedecb.jpg?hash=RZKIk6njfz)
![32742842621_f816ecb818_b.jpg 32742842621_f816ecb818_b.jpg](https://www.lextreme.com/forums/data/attachments/23/23155-05290d141ca37a48c34add2ab47466cc.jpg?hash=BSkNFByjek)
![32866430655_0f5ea85b1c_b.jpg 32866430655_0f5ea85b1c_b.jpg](https://www.lextreme.com/forums/data/attachments/23/23156-05bad3184df2caff0d2e7105a260f9f8.jpg?hash=BbrTGE3yyv)
![32742837751_04a9df303a_b.jpg 32742837751_04a9df303a_b.jpg](https://www.lextreme.com/forums/data/attachments/23/23157-72ea75604d5c14c5c2b503a861dd63e9.jpg?hash=cup1YE1cFM)
![32866427195_a684ecb9b5_b.jpg 32866427195_a684ecb9b5_b.jpg](https://www.lextreme.com/forums/data/attachments/23/23158-1705412f8546e98459849ecc5950f58c.jpg?hash=FwVBL4VG6Y)
![32866428495_3a21ddbcd5_b.jpg 32866428495_3a21ddbcd5_b.jpg](https://www.lextreme.com/forums/data/attachments/23/23159-f37018dae917bb071bc88981c97e3e42.jpg?hash=83AY2ukXuw)
At first, I thought that these plugs might have been out of a different model, but then I found these pictures that confirmed they are correct.
![32485616410_6da8705ca4_b.jpg 32485616410_6da8705ca4_b.jpg](https://www.lextreme.com/forums/data/attachments/23/23160-502343f2ef99d06708fa2dcdb21edea8.jpg?hash=UCND8u-Z0G)
![32743156891_bbe59925d0_o.jpg 32743156891_bbe59925d0_o.jpg](https://www.lextreme.com/forums/data/attachments/23/23161-d0177f618fed19ac7c1f9f11b2cb20de.jpg?hash=0Bd_YY_tGa)
I read that this ECU has a similar (if not same) pinout as the Celsior/LS400, however after looking at it, some of the wires are in different places. For now I'm focusing on the rightmost plug (where immo wires would have been).
This motor did not have a hydraulic fan, and the ECU does not have an immobilizer or MPX bus, so many of the wires are gone, but it still seems a bit odd (and minimal). Below is what you would expect to see on a Celsior.
If I use the Celsior pinout, then the wires should be as follows:
![32743652001_5b37a3e581_z.jpg 32743652001_5b37a3e581_z.jpg](https://www.lextreme.com/forums/data/attachments/23/23162-6fbd4bf838cf24f37ed2849329f06d36.jpg?hash=b71L-DjPJP)
Present:
1 - green - D
10 - red - ??
14 - black/brown - STI-
16 - blue/white - L
25 - green/orage - 4
26 - violet/green - RL
Missing:
3 - IMLD
4 - EOM
5 - HP
6 - TH-
7 - TH+
8 - SOL-
9 - SOL+
11 - MPX1
12 - CCV
17 - TXCT
18 - CODE
19 - RXCK
20 - KSW
21 - LCK1
22 - TAM
23 - PRE
24 - MPX2
Hi all,
I got my hands on a Crown Majesta non-immobilized ECU. Luckily, it had the three rightmost plugs still in it, so I'm able to see which wires were connected from factory as well as the wire colours.
Click on the images below for full size.
![32825269366_e6fbdb5738_b.jpg 32825269366_e6fbdb5738_b.jpg](https://www.lextreme.com/forums/data/attachments/23/23154-45928893a9e37f3c6847d1ccf9aedecb.jpg?hash=RZKIk6njfz)
![32742842621_f816ecb818_b.jpg 32742842621_f816ecb818_b.jpg](https://www.lextreme.com/forums/data/attachments/23/23155-05290d141ca37a48c34add2ab47466cc.jpg?hash=BSkNFByjek)
![32866430655_0f5ea85b1c_b.jpg 32866430655_0f5ea85b1c_b.jpg](https://www.lextreme.com/forums/data/attachments/23/23156-05bad3184df2caff0d2e7105a260f9f8.jpg?hash=BbrTGE3yyv)
![32742837751_04a9df303a_b.jpg 32742837751_04a9df303a_b.jpg](https://www.lextreme.com/forums/data/attachments/23/23157-72ea75604d5c14c5c2b503a861dd63e9.jpg?hash=cup1YE1cFM)
![32866427195_a684ecb9b5_b.jpg 32866427195_a684ecb9b5_b.jpg](https://www.lextreme.com/forums/data/attachments/23/23158-1705412f8546e98459849ecc5950f58c.jpg?hash=FwVBL4VG6Y)
![32866428495_3a21ddbcd5_b.jpg 32866428495_3a21ddbcd5_b.jpg](https://www.lextreme.com/forums/data/attachments/23/23159-f37018dae917bb071bc88981c97e3e42.jpg?hash=83AY2ukXuw)
At first, I thought that these plugs might have been out of a different model, but then I found these pictures that confirmed they are correct.
![32485616410_6da8705ca4_b.jpg 32485616410_6da8705ca4_b.jpg](https://www.lextreme.com/forums/data/attachments/23/23160-502343f2ef99d06708fa2dcdb21edea8.jpg?hash=UCND8u-Z0G)
![32743156891_bbe59925d0_o.jpg 32743156891_bbe59925d0_o.jpg](https://www.lextreme.com/forums/data/attachments/23/23161-d0177f618fed19ac7c1f9f11b2cb20de.jpg?hash=0Bd_YY_tGa)
I read that this ECU has a similar (if not same) pinout as the Celsior/LS400, however after looking at it, some of the wires are in different places. For now I'm focusing on the rightmost plug (where immo wires would have been).
This motor did not have a hydraulic fan, and the ECU does not have an immobilizer or MPX bus, so many of the wires are gone, but it still seems a bit odd (and minimal). Below is what you would expect to see on a Celsior.
If I use the Celsior pinout, then the wires should be as follows:
![32743652001_5b37a3e581_z.jpg 32743652001_5b37a3e581_z.jpg](https://www.lextreme.com/forums/data/attachments/23/23162-6fbd4bf838cf24f37ed2849329f06d36.jpg?hash=b71L-DjPJP)
Present:
1 - green - D
10 - red - ??
14 - black/brown - STI-
16 - blue/white - L
25 - green/orage - 4
26 - violet/green - RL
Missing:
3 - IMLD
4 - EOM
5 - HP
6 - TH-
7 - TH+
8 - SOL-
9 - SOL+
11 - MPX1
12 - CCV
17 - TXCT
18 - CODE
19 - RXCK
20 - KSW
21 - LCK1
22 - TAM
23 - PRE
24 - MPX2
- What is the red #10 wire?
- Does it make sense that this ECU is missing KSW due to no immobilizer?
- What about the HP, LCK1, PRE, and TAM pins for the A/C?
Last edited: