ECU Problem

Reply Subscribe

Thread Tools

Search this Thread

Jul 8, 2008 | 07:36 PM

T_Carps

Thread Starter

Joined: Jul 2008

Posts: 4

ECU Problem

I just swapped in a b16a2 from a 1999 sir for my d16y8 i got the harness off the 99 sir but the ECU from a 2000 sir i get no tack no speedo and an engine light [/align]please help[/align]

Jul 8, 2008 | 07:43 PM

RonJ

Recognized HCF Member

Joined: Sep 2007

Posts: 9,453

From: Houston, Texas

RE: ECU Problem

Start by pulling the CEL code from the ECU (see CEL link in my signature). Post code(s) for more feedback. Also check whether fuse 15 is blown.

Jul 8, 2008 | 07:47 PM

T_Carps

Thread Starter

Joined: Jul 2008

Posts: 4

RE: ECU Problem

thx also when i tried scanning it the scanners could not comunicate with the ecu

Jul 8, 2008 | 08:02 PM

RonJ

Recognized HCF Member

Joined: Sep 2007

Posts: 9,453

From: Houston, Texas

RE: ECU Problem

Quote:

ORIGINAL: T_Carps
thx also when i tried scanning it the scanners could not comunicate with the ecu

Check whether the jumper wire method works for retrieving your CEL codes.

Regarding the lack of communication with the scan tool, check whether fuse 43 is blown under the hood:

Name: picture_1166.jpg
Views: 189
Size: 62.5 KB

Name: picture_1166.jpg
Views: 189
Size: 62.5 KB

Jul 8, 2008 | 09:05 PM

T_Carps

Thread Starter

Joined: Jul 2008

Posts: 4

RE: ECU Problem

i checked both #43 and #15 fuses and there both good and the CEL didnt work it stayed on and theSRS light stayed on

Jul 8, 2008 | 09:42 PM

RonJ

Recognized HCF Member

Joined: Sep 2007

Posts: 9,453

From: Houston, Texas

RE: ECU Problem

I assume that the engine runs. Is this correct?

If so, check for a short in the SCS line as described in the diagram below:

Name: picture_1170.jpg
Views: 90
Size: 81.0 KB

Name: picture_1170.jpg
Views: 90
Size: 81.0 KB

Jul 8, 2008 | 09:43 PM

T_Carps

Thread Starter

Joined: Jul 2008

Posts: 4

RE: ECU Problem

yea it runs perfect except no vtec cause of the engine light

Jul 8, 2008 | 09:47 PM

RonJ

Recognized HCF Member

Joined: Sep 2007

Posts: 9,453

From: Houston, Texas

RE: ECU Problem

Okay, check the voltage between ECU connector C, terminal 7 and body ground (see diagram). With the ignition key turned to ON, your multimeter should read 5V.

Edit: This step requires back probing with the multimeter:

Name: picture_1172.jpg
Views: 69
Size: 64.7 KB