Diagnostic trouble code (DTC) information

Condition 

• Diagnostic trouble code (DTC) ECM-6000 is stored if the signal from the A/C relay is too high, too low or missing.

Substitute Value 

• None

Possible Source 

Signal too high: 

• short-circuit to supply voltage in the signal cable
• defective air conditioning (A/C) relay.

Signal too low: 

• short-circuit to ground in the signal cable

Signal missing: 

• open-circuit in signal cable
• open-circuit in air conditioning (A/C) relay supply
• defective air conditioning (A/C) relay.
• contact resistance in terminals

Fault symptom[s] 

• Air conditioning (A/C) system does not operate