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How do you read the ac fault codes of a jeep grand chrerokee 2000?
Wiki User
∙ 13y ago
With a scan tool.
Using a scan tool is one way to get the HVAC system fault codes.
In the 99/04 Jeep Grand Cherokees, you can also read the fault codes from the dashboard heater control module without a scan tool.
To read the fault codes from the dashboard heater control module:
1. Turn on the ignition switch.
2. Turn on the AZC system. The temperature settings should be displayed for both sides.
3. Simultaneously hold down the AC and the Re-Circ buttons.
4. Then turn the driver's side temperature (Left) control knob to the right (CW) one click.
5. Then release the AC and Re-Circ buttons.
If there are no fault codes, the "00" display value will remain in the window.
If there are any codes, each will be displayed for one second in ascending numerical sequence (note: no effort is made to display faults in the order they occurred). The left side set temperature display will be blanked and the right side set temperature display will indicate current and historical codes (8 historical max) presently active.
Once all codes have been displayed, the system will repeat the fault code numbers. This will continue until the left side set temperature control is moved at least one detent position in either direction, by pressing both the A/C and Recirc buttons at the same time, or the ignition is turned off.
Wiki User
∙ 13y ago
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