Nissan-Datsun 370Z Technical 10-149 Date: 101222
Engine Controls - MIL ON/DTC P1421 Stored
Classification: EC10-037
Reference; NTB10-149
Date: December 22, 2010
2009-2010 370Z;
MIL "ON" DTC P1421 (COLD START CONTROL)
APPLIED VEHICLE: 2009-2010 370Z (Z34) Coupe
2009-2010 370Z (Z34) NISMO Coupe
2010 370Z (HZ34) Roadster
IF YOU CONFIRM:
If an Applied Vehicle has DTC P1421 (Cold Start Control) stored in the ECM,
ACTIONS:
1. Refer to Step 2 in the Service Procedure to confirm this bulletin applies to the vehicle you are working on.
2. If this bulletin applies, reprogram the ECM.
CLAIMS INFORMATION
IMPORTANT:
The purpose of ACTIONS (above) is to give you a quick idea of the work you will be performing. You MUST closely follow the entire SERVICE
PROCEDURE as it contains information that is essential to successfully completing this repair.
SERVICE PROCEDURE
1. Connect C-III to the vehicle to begin the reprogramming procedure.
^ If you are not familiar with the reprogramming procedure, refer to "CONSULT- III (C-III) ECM Reprogramming" general procedure.
Page 164
CAUTION
2. When you get to the ECM Reprogramming screen shown in Figure 1, confirm this bulletin applies as follows.
A. On your C-III screen, look at the Part Number column (see Figure 1):
^ If this column is blank (no part number listed), this bulletin does not apply. Close C-III and refer to ASIST for further diagnostic information.
^ If a Part Number is listed, write it on the Repair Order.
Page 165
B. Compare the Part Number you wrote down to the numbers in the Current ECM Part Number column in Table A.
^ If there is a match, this bulletin applies. Continue with the reprogramming procedure.
NOTE:
If there are two lines (two reprogramming options) on your C-III screen, use the one that does not have the message "Caution! Use ONLY with
NTBXX-XXX".
^ If there is not a match, this bulletin does not apply. Close C-III and refer to ASIST for further diagnostic information.
3. If this bulletin applies and you have performed ECM reprogramming, the screen in Figure 2 appears when reprogramming is complete.
NOTE:
If the screen in Figure 2 does not display (reprogramming does not complete).
Page 166
4. Make sure to erase DTCs from all systems.
NOTE:
During reprogramming, DTCs will set in several systems and must be erased.
5. Test drive the vehicle and make sure it operates correctly and the MIL is OFF.
^ If the MIL comes ON, go back to ASIST for further diagnostic information. Diagnosis and repairs beyond ECM reprogramming are not covered
by this bulletin.
Disclaimer
Engine Controls - MIL ON/DTC P1421 Stored
Classification: EC10-037
Reference; NTB10-149
Date: December 22, 2010
2009-2010 370Z;
MIL "ON" DTC P1421 (COLD START CONTROL)
APPLIED VEHICLE: 2009-2010 370Z (Z34) Coupe
2009-2010 370Z (Z34) NISMO Coupe
2010 370Z (HZ34) Roadster
IF YOU CONFIRM:
If an Applied Vehicle has DTC P1421 (Cold Start Control) stored in the ECM,
ACTIONS:
1. Refer to Step 2 in the Service Procedure to confirm this bulletin applies to the vehicle you are working on.
2. If this bulletin applies, reprogram the ECM.
CLAIMS INFORMATION
IMPORTANT:
The purpose of ACTIONS (above) is to give you a quick idea of the work you will be performing. You MUST closely follow the entire SERVICE
PROCEDURE as it contains information that is essential to successfully completing this repair.
SERVICE PROCEDURE
1. Connect C-III to the vehicle to begin the reprogramming procedure.
^ If you are not familiar with the reprogramming procedure, refer to "CONSULT- III (C-III) ECM Reprogramming" general procedure.
Page 164
CAUTION
2. When you get to the ECM Reprogramming screen shown in Figure 1, confirm this bulletin applies as follows.
A. On your C-III screen, look at the Part Number column (see Figure 1):
^ If this column is blank (no part number listed), this bulletin does not apply. Close C-III and refer to ASIST for further diagnostic information.
^ If a Part Number is listed, write it on the Repair Order.
Page 165
B. Compare the Part Number you wrote down to the numbers in the Current ECM Part Number column in Table A.
^ If there is a match, this bulletin applies. Continue with the reprogramming procedure.
NOTE:
If there are two lines (two reprogramming options) on your C-III screen, use the one that does not have the message "Caution! Use ONLY with
NTBXX-XXX".
^ If there is not a match, this bulletin does not apply. Close C-III and refer to ASIST for further diagnostic information.
3. If this bulletin applies and you have performed ECM reprogramming, the screen in Figure 2 appears when reprogramming is complete.
NOTE:
If the screen in Figure 2 does not display (reprogramming does not complete).
Page 166
4. Make sure to erase DTCs from all systems.
NOTE:
During reprogramming, DTCs will set in several systems and must be erased.
5. Test drive the vehicle and make sure it operates correctly and the MIL is OFF.
^ If the MIL comes ON, go back to ASIST for further diagnostic information. Diagnosis and repairs beyond ECM reprogramming are not covered
by this bulletin.
Disclaimer
