Symptom Table
Symptom Noise source Probable cause Corrective action
Unusual noise from compressor when A/C is ON.
Inside of A/C compressor
Worn, broken, or clogged internal components...
Other information:
DTC Description
DTC DETECTION LOGIC
ECM back up system does not function properly.
EEPROM (built-in microcomputer) system internal ECM does not function properly.
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
P0603
ECM BACK UP/CIRCUIT
[Internal Control Module Keep Alive Memory (KAM) Error]
Diagnosis condition
Ignition switch ON
Signal (terminal)
—
Threshold
ECM back up system does not function properly
Diagnosis delay time
—
P062F
CONTROL MODULE
(Internal control module EEPROM error)
Diagnosis condition
Start engine and let it idle
Signal (terminal)
—
Threshold
EEPROM (built-in microcomputer) system internal ECM does not function properly
Diagnosis delay time
—
POSSIBLE CAUSEDTC P0603
Harness or connectors
[ECM power supply circuit is open or shorted...
Exploded View
1.
Optical sensor
2.
Defroster grille
A.
Harness connector
Pawl
Removal and Installation
REMOVALUsing a suitable tool, release pawls and remove optical sensor (2) from defroster grille (1).
: Pawl
Disconnect harness connector (A) from optical sensor...