B1140

B1140-REAR POWER LOCK OUT SWITCH PERFORMANCE (ATC & MTC)

For a complete wiring diagram REFER to DIAGRAMS/ELECTRICAL .

Theory of Operation


The switch input changes when the switch is pushed down. A stored DTC indicates that the Rear Power Lock Out Switch was stuck in a pushed position for more than 10 minutes, but has since returned to its normal state. An active DTC indicates that the Rear Power Lock Out Switch is stuck in a pushed position. When active, this DTC will prevent proper Rear Power Lock Out Switch and status indicator function.


- When Monitored:
With the ignition on.

- Set Condition:
If the Rear Power Lock Out Switch is detected in a pushed position for more than 10 minutes.






Diagnostic Test


1. INSPECT THE A/C HEATER CONTROL FOR DAMAGE
Inspect the A/C Heater Control for damage.
Is the A/C Heater Control damaged?

Yes


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


No


- Go To 2


2. INSPECT FOR OBJECT OR SUBSTANCE CAUSING THE REAR POWER LOCK OUT SWITCH TO STAY OR STICK IN A PUSHED POSITION
Inspect the A/C Heater Control for anything that would cause the Rear Power Lock Out Switch to stay or stick in a pushed position.
Is anything present that would cause the Rear Power Lock Out switch to stay or stick in a pushed position?

Yes


- Repair as necessary.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test.


No


- Go To 3


3. CHECK FOR NORMAL REAR POWER LOCK OUT SWITCH & STATUS INDICATOR FUNCTION
Turn the ignition on.
Set the Blower control to any position except Off.
Set the Mode control to any position except Auto.
Press the Rear Power Lock Out Switch on and off several times while observing the A/C status indicator.
Does the Rear Power Lock Out Switch indicator turn on and off?

Yes


- Go To 4


No


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


4. VERIFY THE DTC IS STILL ACTIVE
With the scan tool, erase HVAC DTCs.
Turn the ignition off, wait 10 seconds, and then turn the ignition on. Wait 10 minutes before proceeding.
With the scan tool, read HVAC DTCs.
Does the scan tool display this DTC?

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.