Some Mazda^® B-2500^® drivers may complain of a high idle in vehicles with a manual transmission. This may be caused by a poor electrical connection at the wire harness to the throttle position sensor (TPS). A service kit is available to resolve this concern. Correct the condition by following the steps in this Tech Tip.

Applicable Model
All 1998-2000 Mazda B-2500 Trucks with manual transmission

Parts Information

Repair Procedure
Review safety procedures in ALLDATA Repair® before beginning.

1. Verify customer concern.
2. Install service kit per the instructions. (Refer to Figure 1 and Figure 2 for additional details).

THROTTLE POSITION SENSOR (TPS) CONNECTOR INSTALLATION INSTRUCTIONS

1. Unhook TPS connector (Figure 2).
2. Cut TPS connector off at connector and remove plastic sheathing.
3. Install sheathing on new TPS connector pigtail.
4. Locate the brown/white wire at location A.
   
   • Cut and splice in a butt connector (provided in kit) approximately 45 mm from the TPS connector.
   • Crimp butt splice connector and shrink tubing with heat gun of an acceptable heat source.
    
5. Locate the gray/white wire at location B.
   
   • Cut and splice in a butt connector (provided in kit) approximately 85 mm from the TPS connector using the above procedure.
    
6. Locate the gray/red wire at location C.
   
   • Cut and splice in a butt connector (provided in kit) approximately 125 mm from the TPS connector using the above procedure.
    
7.  Reinstall plastic sheathing.
8. Tape over all wiring and sheathing with electrical tape or equivalent.
9. Install TPS connector to TPS sensor.
10. Road test the vehicle to verify the repair

NOTE: This Repair/Service Procedure is excerpted from a Technical Service Bulletin published by the vehicle manufacturer, and is intended for use by trained, professional technicians with the knowledge, tools and equipment to do the job properly and safely. It is recommended that this procedure not be performed by “do-it-yourselfers.”