A/C-Heater System DTCS

A/C-HEATER SYSTEM DTCS

⁽¹⁾ DTC Code

System/Affected Circuit

Possible Cause/Repair

0000

No Fault (Malfunction) Recognized

Perform MEASURING VALUE BLOCK Function

00532

A/C Comp. Supply Voltage Low

A/C Switch Off, Open High Or Low Pressure Switch, ⁽²⁾ Voltage Less Than 10 Volts At A/C Compressor Control Module

00624

A/C Compressor Engagement

Short Circuit To Battery Voltage Between ECM & A/C Compressor Clutch Control Module Terminal No. 87a Or Faulty ECM

01270

A/C Comp. Clutch Speed Deviation

Loose Drive Belt, A/C Comp.Clutch Slips, A/C Comp. Does Not Turn Freely, Incorrect A/C Comp. Control Module

01270

A/C Comp. Clutch Break

⁽³⁾ A/C Comp. Does Not Turn Freely, Faulty A/C Comp., Or Open Circuit Between A/C Comp. & A/C Comp. Control Module

01270

A/C Comp. Clutch Mechanical Fault

A/C Comp. Clutch Stuck On, Short Circuit To Battery Voltage Between A/C Comp. & A/C Comp. Control Module Terminal "K", Or Faulty Module

00529

No Engine Speed (RPM) Information ⁽⁴⁾

Open Circuit Between Instrument Cluster & A/C Comp. Control Module No RPM Signal From Instrument Panel, Or Faulty Module

⁽¹⁾	Diagnostic trouble codes appear only in printout done in operating mode number one.

⁽²⁾	Check wiring harness for open circuit to A/C compressor control module terminal No. 30 and 75.

⁽³⁾	This malfunction is only recognized during OUTPUT DIAGNOSTIC TEST MODE. No additional message is displayed.

⁽⁴⁾	Check A/C compressor clutch and speed sensor. Check wiring (open/shorted circuit) between A/C compressor control module and A/C compressor clutch and/or speed sensor.