A/T - Hold Lamp Goes ON/OFF, DTC 55 Pulse Generator
89mazda07Category 7
Applicable Models 1988-89 626/MX-6 & 929
Subject TURBINE SENSOR/PULSE GENERATOR
Bulletin No. 067/89
Issued 10/12/89
Revised
DESCRIPTION
On some of the subject vehicles, the hold lamp goes ON and OFF while driving. If the EC-AT tester is connected, it indicates "Code 55". As one of the causes for this phenomenon, poor internal contact of the turbine sensor is probable.
When judging the performance of the turbine sensor, wiggle the wire harness of the turbine sensor as illustrated below and check whether the resistance value is within the specification.
If a poor contact exists in the turbine sensor, resistance value changes and the value reads out of specification when wiggling the wire harness.
PRODUCTION CHANGE
To improve this, a connection soldering process has been newly adopted to the wire harness and terminal of the turbine sensor.
VIN OF PRODUCTION CHANGE
929: JM1HC****K0210413 November 1, 1988
626/MX-6: JM1GD****KI731830 November 1, 1988 (MC Production)
MX-6: 1YVGD****K5243834 January 1, 1989 (MMUC Production)
PARTS INFORMATION
The part numbers have not been changed.