#
DTC 19

id070200803200

DTC 19 | Air mix actuator (potentiometer) (past)
--- | ---
POSSIBLE CAUSE | • Air mix actuator malfunction • Climate control unit malfunction • Open circuit between air mix actuator and climate control unit • Short circuit between air mix actuator (terminal C) and climate control unit (terminal 1U: 24-pin)

Diagnostic Procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | • Inspect air mix actuator. • Is it okay? | Yes | Go to the next step.
No | Replace air mix actuator.
2 | • Disconnect climate control unit connector (24-pin) and air mix actuator connector. • Is there open circuit between following terminals of climate control unit connector (24-pin) and air mix actuator connector? - 1B-A (L.H.D.) or B (R.H.D.) - 1U-C - 1I-B (L.H.D.) or A (R.H.D.) | Yes | Repair wiring harness.
No | Go to the next step.
3 | • Is there short circuit to ground between terminal 1U of climate control unit connector (24-pin) and terminal C of air mix actuator connector? | Yes | Repair wiring harness.
No | This system is normal at present. (Erase the past failure from memory.)