Protege LX L4-1489cc 1.5L DOHC MFI (1998)
Canister Purge Solenoid: All Technical Service Bulletins
Emissions - MIL ON/DTC P0170 Set
Bulletin No.: 007/99
Issued
Revised
Section
01
Applicable Model/s
1997-98 Protege
Subject
NO DRIVEABLITY CONCERNS MIL "ON" DTC
P0170 (COLD AMBIENT TEMPERATURES)
APPLICABLE MODEL(S)/VINS
All 1997-98 Protege 1.5L.
DESCRIPTION
During cold ambient temperatures, the Malfunction Indicator Lamp (MIL) may come ON if the vehicle is stopped within 10-20 minutes after a cold
engine start. This condition may be caused by improperly calibrated winter fuel blends resulting in temporary Rich LFT (long fuel trim) and SFT (short
fuel trim) readings.
Customers having this concern should have their vehicle repaired using the following procedure.
REPAIR PROCEDURE
1.
Verify customer concern.
2.
Confirm FREEZE FRAME DATA was set for DTC P0170 and record it on repair order.
3.
Perform the Workshop Manual (section 01) diagnostic procedures for DTC P0170.
-
If a cause was found during the diagnostic procedures, use the Workshop Manual to repair it. Then proceed to STEP 6.
-
If cause was not found during the diagnostic procedures and the FREEZE FRAME DATA indicates LFT and SFT were "RICH" 85 shown in
the example below, proceed to STEP 4 and install an Open Vent Kit.
Example FREEZE FRAME DATA:
ECT 192F, F/S 1 CLSD, LOAD 24.7%, LFT-15, RPM 687, SFT-14, MPH 0)
