DTC P145E: Notes

DTC P145E (MZI-3.5) DETECTION CONDITION AND POSSIBLE CAUSES

DTC P145E	PCV heater control circuit
DETECTION CONDITION	This DTC sets when the PCM detects a PCV valve heater circuit malfunction.
POSSIBLE CAUSE	Open circuit between PCV valve heater control terminal A and main relay No.1 Open circuit between PCV valve heater fitting terminal A and main relay No.1 Short to ground circuit between PCV valve heater control terminal B and PCM terminal 2BL Short to ground circuit between PCV valve heater fitting terminal B and PCM terminal 2AU Open circuit between PCV valve heater control terminal B and PCM terminal 2BL Open circuit between PCV valve heater fitting B and PCM terminal 2AU Connector or terminal malfunction PCV valve heater control malfunction PCV valve heater fitting malfunction

DTC P145E

PCV heater control circuit

DETECTION CONDITION

POSSIBLE CAUSE

Open circuit between PCV valve heater control terminal A and main relay No.1
Open circuit between PCV valve heater fitting terminal A and main relay No.1
Short to ground circuit between PCV valve heater control terminal B and PCM terminal 2BL
Short to ground circuit between PCV valve heater fitting terminal B and PCM terminal 2AU
Open circuit between PCV valve heater control terminal B and PCM terminal 2BL
Open circuit between PCV valve heater fitting B and PCM terminal 2AU
Connector or terminal malfunction
PCV valve heater control malfunction
PCV valve heater fitting malfunction

Fig 1: PCV Heater Control Circuit Diagram

Courtesy of MAZDA MOTORS CORP.