Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 627

B1844–SUNROOF CLOSE SWITCH INPUT CIRCUIT HIGH

For a complete wiring diagram Refer to Section 8W.

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POWER TOP - ELECTRICAL DIAGNOSIS

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Theory of Operation

The Sunroof Motor/Module supplies a 12 volt supply circuit to the sunroof switch. When the switch is closed to any
of the 3 sense circuits (open, close or vent), it sends that command back to the module.

•

When Monitored:
Whenever the Sunroof module is awake.

•

Set Condition:
Whenever the module has determined that the close switch has been applied for over 15 seconds or there is
a short to voltage on the Sunroof Close Switch Sense circuit, this code will set.

Possible Causes

(Q5) SUNROOF CLOSE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE

(Q5) SUNROOF CLOSE SWITCH SENSE CIRCUIT SHORT TO (Q6) SUNROOF SWITCH SUPPLY CIRCUIT

SUNROOF SWITCH SHORTED

SUNROOF MOTOR/MODULE

Diagnostic Test

1.

TEST FOR INTERMITTENT CONDITION

Turn the ignition on.

With the scan tool, record and erase DTC’s

Press and release the Sunroof Switch in all positions several times.

Wait 30 seconds.

With the scan tool, read DTC’s.

Does the scan tool display B1844–SUNROOF CLOSE SWITCH INPUT CIRCUIT HIGH?

Yes

>> Go To 2

No

>> The conditions that caused this code to set are not present at this time. Check the switch for any bind-

ing conditions and using the wiring diagram/schematic as a guide, inspect the wiring and connectors.

2.

SUNROOF SWITCH SHORTED

With the scan tool, erase DTC’s.

Turn the ignition off.

Disconnect the Sunroof Switch connector.

Turn the ignition on and wait 30 seconds.

With the scan tool, read DTC’s.

Does the scan tool display B1844–SUNROOF CLOSE SWITCH
INPUT CIRCUIT HIGH?

Yes

>> Go To 3

No

>> Replace the Sunroof Switch.

Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST – VER 1).

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POWER TOP - ELECTRICAL DIAGNOSIS

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3.

(Q5) SUNROOF CLOSE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE

NOTE: To further diagnose the sunroof, it is necessary to lower or
remove the headliner.
Turn the ignition off.

Lower the headliner to gain access to the Sunroof Motor/Module con-
nector.

Disconnect the Sunroof Motor/Module connector.

NOTE: Ensure the A-Pillar connector is connected before proceed-
ing.
Turn the ignition on.

Measure the voltage between the (Q5) Sunroof Close Switch Sense cir-
cuit and Ground.

Is the voltage above 0.4 volts?

Yes

>> Repair the (Q5) Sunroof Close Switch Sense circuit for a short to voltage.

Perform BODY VERIFICATION TEST - VER 1. (Refer to BODY VERIFICATION TEST – VER 1).

No

>> Go To 4

4.

(Q5) SUNROOF CLOSE SWITCH SENSE CIRCUIT SHORT TO (Q6) SUNROOF SWITCH SUPPLY CIRCUIT

Turn the ignition off.

Disconnect the A-Pillar connector.

Measure the resistance between the (Q5) Sunroof Close Switch Sense
circuit and the (Q6) Sunroof Switch Supply circuit in the Sunroof Motor/
Module connector.

Is the resistance below 1000.0 ohms?

Yes

>> Repair the (Q5) Sunroof Close Switch Sense circuit for a

short to the (Q6) Sunroof Switch Supply circuit.

Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST – VER 1).

No

>> Replace the Sunroof Motor/Module.

Perform the Sunroof Position Calibration, (Refer to 8 -
ELECTRICAL/POWER TOP/MOTOR - STANDARD PRO-
CEDURE - SUNROOF POSITION CALIBRATION). Perform
the Excessive Force Limitation Calibration, (Refer to 8 -
ELECTRICAL/POWER TOP/MOTOR - STANDARD PRO-
CEDURE - EXCESSIVE FORCE LIMITATION CALIBRA-
TION).

Perform BODY VERIFICATION TEST - VER 1. (Refer to BODY VERIFICATION TEST – VER 1).

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POWER TOP - ELECTRICAL DIAGNOSIS

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B1847–SUNROOF VENT SWITCH INPUT CIRCUIT HIGH

For a complete wiring diagram Refer to Section 8W.

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POWER TOP - ELECTRICAL DIAGNOSIS

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