Mazda 626 MX-6 Workshop Manual page 243

Code No. 10 (Intake air thermo sensor)
Are there poor connections in air flow meter circuit?
Is there continuity between intake air thermo sensor
(in air flow meter) and engine control unit?
Intake air temperature sensor
(in air flow meter)
THA(R wire)
E (LgY wire)
2
Is resistance of intake air thermo sensor
(in air flow meter) OK?
Resistance:
Terminal
-20°C ( — 4°F) : 13.6-18.4 kfl
E2 « THA 20°C ( 68°F) : 2.21 -
60°C (140°F) : 4 9 3 - 667
Is same Code No. present after performing after­
repair procedure? (Refer to page 4B—11)
Are engine control unit 2J and 2C terminal voltages
OK? (Refer to page 4B—106)
YES
NO
NO
Control unit
2J
2C
YES
Resistance
2.69 kfl
fl
YES
YES
YES
TROUBLESHOOTING WITH SST 4 B
Repair or replace connector
PC: Open circuit in wiring harness from intake air thermo
sensor (in air flow meter) to engine control unit
NO
Replace air flow meter
NO
Intake air thermo sensor and circuit OK
NO
PC: Short circuit in wiring harness
PC: Engine control unit malfunction
PC: Possible Cause
86U04B-014
4B-23