No 11 Code (Intake Air Thermo Sensor) - Mazda 626 1989 Workshop Manual

No 11 Code (Intake air thermo sensor)

Are there poor connections at intake air thermo
sensor connectors?
_ _
____ ________________
NO
Is there continuity between intake air thermo sensor
(dynamic chamber) and engine control unit?
Intake air thermo sensor
(dynamic chamber)
A (RC wire)
B (LgY wire)
YES
Is resistance intake air thermo sensor
of
(dynamic chamber) OK?
Resistance:
Temperature
20°C (68 °F)
50°C (122°F)
8 5 °C (1 8 5 °F )
YES
Is same Code No. present after performing
after-repair procedure? (Refer to page 4B— 12)
Yes
Are engine control unit 2J and 2C terminal voltages
OK? (Refer to page 4B— 80)
\
TROUBLESHOOTING WITH SST
YES
NO
Engine control
------ ► PC: Open circuit in wiring harness
unit
2J
2C
NO
Resistance
2 9 .7 -3 6 .3 kO
8 ,4 - 1 0 .2 kfi
2 .5 - 3 .1 M)
No
NO
YES
Repair or replace connector
Replace intake air thermo sensor (dynamic chamber)
Intake air thermo sensor and circuit OK
PC; Short circuit in wiring harness
PC: Engine control unit malfunction
4B
PC: Possible Cause
76F04B-015
4B-19