P1686 Mazda Transmission Control Module Power Up Temperature Sensor Circuit High Voltage
Possible causes
– Reprogram TCM and recheck code
– Replace Transmission Control Module (TCM) Sensor/body assembly one piece
– Replace Transmission Control Module (TCM) Sensor/body assembly one piece
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1686 Mazda Description
The Transmission Control Module (TCM) power up the temperature sensor is located inside of the control solenoid (w/body and TCM) valve assembly and has no serviceable parts. The TCM power up temperature sensor provides the temperature pof the TCM at TCM power up. This temperature readings is used in various shifting and diagnostic routines in the TCM software. This fault is handled inside the TCM and no external circuit are involved.
Mazda Vehicle:Mazda B-Series, Mazda CX-7,Mazda CX-9,Mazda MAZDA2,Mazda MAZDA3,Mazda MAZDA5,Mazda MAZDA6,Mazda Miata MX-5,Mazda RX-8,Mazda Tribute,Mazda RX-8,Mazda MX-5,Mazda CX-9,Mazda Atenza,Mazda Axela,Mazda Tribute,