B1010

B1010-MIX SWITCH REQUEST INPUT CIRCUIT LOW (ATC)

For a complete wiring diagram refer to Diagrams/Electrical.

Theory of Operation

The Mix mode switch input changes when the switch is pushed down. An active DTC indicates that the switch is stuck in a pushed position. A stored DTC indicates that the switch was stuck in a pushed position for more than two minutes, but has since returned to its normal state.

- When Monitored:

With the ignition on.

- Set Condition:

If the Mix mode switch is stuck in a pushed position for more than two minutes. This DTC has a maturing time of two minutes and a de-maturing time of two seconds. If the DTC's status changes from active to stored it will stay in memory for 100 ignition cycles.





NOTE: This DTC must be active for the results of this test to be valid. Do not perform this test if this DTC is stored. Refer to HVAC System Test (ATC) for stored DTC test procedures. HVAC System Test (ATC)

Diagnostic Test

1.INSPECT FOR OBJECT HOLDING SWITCH IN A PUSHED POSITION

Inspect the A/C Heater Control for an object holding the switch in a pushed position. If present, remove the object.

Turn the ignition on.

With the scan tool, erase HVAC DTCs.

Turn the ignition off, wait 10 seconds, and then turn the ignition on.

Wait two minutes, then with the scan tool, read HVAC DTCs.

Does the scan tool display active: B1010-MIX SWITCH REQUEST INPUT CIRCUIT LOW?

Yes

- Replace the A/C Heater Control.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test