Code No. 10 (Intake Air Thermo Sensor) - Mazda 626 MX-6 Workshop Manual

4A
TROUBLESHOOTING WITH SST

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
YES
Is resistance of intake air thermo sensor
(in air flow meter) OK?
Resistance:
Terminal
-2 0 °C ( — 4°F) : 13.6-18.4 k
E2 «• THA 20°C ( 68°F) : 2.21— 2.69 kfl
60°C (140°F) : 4 9 3 - 667 «
YES
Is same Code No. present after performing after­
repair procedure? (Refer to page 4A—11)
YES
Are engine control unit 2J and 2C terminal voltages
OK? (Refer to page 4A—91)
YES
4A—18
YES
NO
NO
Control unit
2J
2C
Resistance
U
i
Repair or replace connector
PC: Open circuit in wiring harness from intake air thermo
sensor-{in air flow meter) to engine control unit
Replace air flow meter
Intake air thermo sensor and circuit OK
PC: Short circuit in wiring harness
PC: Engine control unit malfunction
PC: Possible Cause
1
'
§
86U04A-024