Pickup 4WD V6-2972cc 3.0L SOHC (1991)
Air Flow Meter/Sensor: Technical Service Bulletins
Engine Controls - Air Flow Sensor Connector Correction
NO.: TSB-93-13-002
DATE: May, 1993
MODEL: 1991 Truck
SUBJECT:
3.0L AIR FLOW SENSOR CONNECTOR - SERVICE MANUAL CORRECTION
[TSB Revision: TSB-93-13]
THIS BULLETIN IS A REPRINT OF TSB-91-13-011, NECESSITATED BECAUSE OF A PRINTING ERROR IN THE 1991 TSB MANUAL.
PURPOSE
This bulletin corrects the 3.OL air flow sensor connector and wire color codes shown in the 1991 Truck Volume 2 Service Manual. The wire connecting
the air flow sensor to the Engine Control Unit is changed from LY (blue/yellow) to WB (white/black). The color codes for the air flow sensor connector
(A-09) are also changed. Please make the indicated service manual corrections, and as reference to this TSB, please write this TSB number in the TSB
revision box on the affected service manual page.
SERVICE MANUAL AFFECTED
1991 Truck Volume 2, page 43
SERVICE MANUAL CORRECTION
As shown, on the wire connecting the Engine Control Unit to the air flow sensor, please change the LY designation to "WB" In the connector A-09,
cross out the RB and write in "RL" and cross out GL and write in "GY"