Chrysler PT Cruiser. Manual — part 78
Symptom:
FRONT WINDOW MOTOR MALFUNCTION
When Monitored and Set Condition:
FRONT WINDOW MOTOR MALFUNCTION
When Monitored:
Whenever the module is awake.
Set Condition:
If the module does not sense a fully open or fully closed glass position after
10 seconds of actuation, this code will set.
POSSIBLE CAUSES
TROUBLE CODE PRESENT
FRONT WINDOW MOTOR
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t, record and erase DTC’s.
Cycle the ignition switch from On to Off to On.
Operate the front window switch down and up several times.
Wait one minute.
With the DRBIII
t, read DTCs.
Does the DRBIII
t display FRONT WINDOW MOTOR MALFUNCTION?
All
Yes
→ Replace the Front Window Regulator Module in accordance with
the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
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.
299
POWER WINDOWS
Symptom:
FRONT WINDOW SWITCH MUX CIRCUIT OPEN
When Monitored and Set Condition:
FRONT WINDOW SWITCH MUX CIRCUIT OPEN
When Monitored:
Whenever the module is awake.
Set Condition:
If the Module senses a voltage above 4.8 volts on the Front Window Switch
Mux circuit, this code will set.
POSSIBLE CAUSES
TROUBLE CODE PRESENT
SWITCH OPEN
FRONT WINDOW SWITCH MUX CIRCUIT OPEN
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 front window switch down and up several times.
Wait one minute.
With the DRBIII
t, read DTCs.
Does the DRBIII
t display FRONT WINDOW SWITCH MUX CIRCUIT OPEN?
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.
Connect a jumper wire between Ground and the Front Window Switch Mux circuit.
With the DRBIII
t, read DTCs.
Does the DRBIII
t display FRONT WINDOW SWITCH MUX CIRCUIT SHORT TO
GROUND?
All
Yes
→ Replace the power window switch.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
300
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 of the Front Window Switch Mux circuit between the Window
Module connector and the Window Switch connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Replace the Window Regulator Module in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Repair the Front Window Switch Mux circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
301
POWER WINDOWS
FRONT WINDOW SWITCH MUX CIRCUIT OPEN —
Continued
Symptom:
FRONT WINDOW SWITCH MUX CIRCUIT SHORT TO GROUND
When Monitored and Set Condition:
FRONT 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 Front Window
Switch Mux circuit, this code will set.
POSSIBLE CAUSES
TROUBLE CODE PRESENT
SWITCH SHORTED
FRONT 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 front window switch down and up several times.
Wait one minute.
With the DRBIII
t, read DTCs.
Does the DRBIII
t display FRONT 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 FRONT WINDOW SWITCH MUX CIRCUIT OPEN?
All
Yes
→ Replace the power window switch.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
302
POWER WINDOWS
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