My Z is a 2004, 6 spd, Touring Coupe. It has 1500 miles and just installed the Nismo CAI this past weekend. After install the test drive showed a noticeable improvement in power shifting above 4000 RPM. Next day started car and "SEL" comes on along with Slip and VDC Off. ECM went into "safe mode" which was pretty scary. Car will not run over 2500 RPM. Solution: Disconnected battery for 20 minutes, and reset the computer using service manual procedure. Got lucky ! Now car runs faster than ever and looks different that any other Z in this area due to the E&G polished SS fron t grill install. Gives it a mean look.
Now its ZZZZZZZZZ time........... All's well that ends well.

 

Sooooo..... where's the pix!!!!

 

 

Pics coming soon...

 

How did you reset the computer? I am installing the CAI today and am a little freaked. A buddy of mine but an AEM in his and it was great but now the computer has adjusted and it is basically detuned.

I am in Pem Pines

T

 

HI T-

The following is the procedure from the service manual. It also allows you to read the trouble code. Good luck!

ZT from Miami

Do a self-diagnostic and find yourself. From the service manual:

How to Set Diagnostic Test Mode II (Self-diagnostic Results)
1. Confirm that accelerator pedal is fully released, turn ignition switch “ON” and wait 3 seconds.
2. Repeat the following procedure quickly five times within 5 seconds.
a. Fully depress the accelerator pedal.
b. Fully release the accelerator pedal.
3. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the MIL starts
blinking.
4. Fully release the accelerator pedal.
ECM has entered to Diagnostic Test Mode II (Self-diagnostic results).

DIAGNOSTIC TEST MODE II — SELF-DIAGNOSTIC RESULTS
In this mode, the DTC and 1st trip DTC are indicated by the number of blinks of the MIL as shown below.
The DTC and 1st trip DTC are displayed at the same time. If the MIL does not illuminate in diagnostic test
mode I (Malfunction warning), all displayed items are 1st trip DTCs. If only one code is displayed when the MIL
illuminates in diagnostic test mode II (SELF-DIAGNOSTIC RESULTS), it is a DTC; if two or more codes are
displayed, they may be either DTCs or 1st trip DTCs. DTC No. is same as that of 1st trip DTC. These unidentified
codes can be identified by using the CONSULT-II or GST. A DTC will be used as an example for how to
read a code.
A particular trouble code can be identified by the number of four-digit numeral flashes. The “zero” is indicated
by the number of ten flashes. The length of time the 1,000th-digit numeral flashes on and off is 1.2 seconds
consisting of an ON (0.6-second) - OFF (0.6-second) cycle.
The 100th-digit numeral and lower digit numerals consist of a 0.3-second ON and 0.3-second OFF cycle.
A change from one digit numeral to another occurs at an interval of 1.0-second OFF. In other words, the later
numeral appears on the display 1.3 seconds after the former numeral has disappeared.
A change from one trouble code to another occurs at an interval of 1.8-second OFF.
In this way, all the detected malfunctions are classified by their DTC numbers. The DTC “0000” refers to no
malfunction. (See EC-8, "INDEX FOR DTC" )

How to Erase Diagnostic Test Mode II (Self-diagnostic Results)
1. Set ECM in Diagnostic Test Mode II (Self-diagnostic results). Refer to EC-73, "How to Set Diagnostic Test
Mode II (Self-diagnostic Results)" .
2. Fully depress the accelerator pedal and keep it for more than 10 seconds.
The emission-related diagnostic information has been erased from the backup memory in the ECM.
3. Fully release the accelerator pedal, and confirm the DTC 0000 is displayed.