Chrysler PT Cruiser. Manual — part 81
Symptom:
REAR WINDOW SWITCH MUX CIRCUIT SHORT TO GROUND
When Monitored and Set Condition:
REAR WINDOW SWITCH MUX CIRCUIT SHORT TO GROUND
When Monitored:
Whenever the module is awake.
Set Condition:
If the Module senses a voltage below 0.75 volts on the Rear Window
Switch Mux circuit, this code will set.
POSSIBLE CAUSES
TROUBLE CODE PRESENT
SWITCH SHORTED
REAR WINDOW SWITCH MUX CIRCUIT SHORT TO GROUND
WINDOW MODULE
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t, record and erase DTC’s.
Cycle the ignition switch from On to Off.
Operate the rear window switch down and up several times.
Wait one minute.
With the DRBIII
t, read DTCs.
Does the DRBIII
t display REAR WINDOW SWITCH MUX CIRCUIT SHORT TO
GROUND?
All
Yes
→ Go To 2
No
→ The conditions that caused this code to set is not present at this
time. Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors for a intermittent condition.
Perform BODY VERIFICATION TEST - VER 1.
2
With the DRBIII
t, erase DTC’s.
Cycle the ignition switch from On to Off.
Disconnect the Power Window Switch connector.
With the DRBIII
t, read DTCs.
Does the DRBIII
t display REAR WINDOW SWITCH MUX CIRCUIT OPEN?
All
Yes
→ Replace the power window switch.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
311
POWER WINDOWS
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the Power Window Switch connector.
Disconnect the Window Regulator Module connector.
Measure the resistance between Ground and the Rear Window Switch Mux circuit.
Is the resistance below 5000.0 ohms?
All
Yes
→ Repair the Rear Window Switch Mux circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Window Regulator Module in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
312
POWER WINDOWS
REAR WINDOW SWITCH MUX CIRCUIT SHORT TO GROUND —
Continued
Symptom:
REAR WINDOW SWITCH MUX CIRCUIT VALUE OUT OF RANGE
When Monitored and Set Condition:
REAR WINDOW SWITCH MUX CIRCUIT VALUE OUT OF RANGE
When Monitored:
Whenever the module is awake.
Set Condition:
If the Module receives a resistance value which is not acceptable on the
Rear Window Switch Mux circuit, this code will set.
POSSIBLE CAUSES
TROUBLE CODE PRESENT
SWITCH GROUND OPEN
REAR WINDOW SWITCH MUX CIRCUIT SHORT TO GROUND
SWITCH INOPERATIVE
REAR WINDOW SWITCH MUX CIRCUIT SHORT TO VOLTAGE
WINDOW MODULE - VOLTAGE HIGH
WINDOW MODULE - VOLTAGE LOW
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t, record and erase DTC’s.
Cycle the ignition switch from On to Off.
Operate the rear window switch down and up several times.
Wait one minute.
With the DRBIII
t, read DTCs.
Does the DRBIII
t display REAR WINDOW SWITCH MUX CIRCUIT VALUE OUT
OF RANGE?
All
Yes
→ Go To 2
No
→ The conditions that caused this code to set is not present at this
time. Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors for a intermittent condition.
Perform BODY VERIFICATION TEST - VER 1.
2
Turn the ignition off.
Disconnect the Power Window Switch connector.
Turn off all lights.
Measure the resistance between Ground and the Window Switch Ground circuit.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 3
No
→ Repair the Window Switch Ground for an open.
Perform BODY VERIFICATION TEST - VER 1.
313
POWER WINDOWS
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the Power Window Switch connector.
Turn the ignition on.
Measure the voltage between the Rear Window Switch Mux circuit and Ground.
Select the voltage measured.
All
4.9 to 5.2 Volts
Replace the power window switch.
Perform BODY VERIFICATION TEST - VER 1.
Below 4.8 Volts
Above 5.3 Volts
4
Turn the ignition off.
Disconnect the Power Window Switch connector.
Disconnect the Window Regulator Module connector.
Measure the resistance between Ground and the Rear Window Switch Mux circuit.
Is the resistance below 10000.0 ohms?
All
Yes
→ Repair the Rear Window Switch Mux circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Window Regulator Module in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
5
Turn the ignition off.
Disconnect the Power Window Switch connector.
Disconnect the Window Regulator Module connector.
Turn the ignition on.
Measure the voltage between the Rear Window Switch Mux circuit and ground.
Is there any voltage present?
All
Yes
→ Repair the Rear Window Switch Mux circuit for a short to voltage.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Window Regulator Module in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
314
POWER WINDOWS
REAR WINDOW SWITCH MUX CIRCUIT VALUE OUT OF RANGE —
Continued
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