Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 2314
•
When Monitored:
With the ignition on.
•
Set Condition:
If the Right Sunload Sensor input is out of range toward the high voltage threshold.
Possible Causes
(G139) SUN SENSOR NO. 2 SIGNAL CIRCUIT OPEN
(G139) SUN SENSOR NO. 2 SIGNAL CIRCUIT SHORTED TO VOLTAGE
(G939) SUN SENSOR RETURN CIRCUIT OPEN
SUN SENSOR
A/C HEATER CONTROL
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.
Diagnostic Test
1.
CHECK (G139) SUN SENSOR NO. 2 SIGNAL CIRCUIT VOLTAGE
Turn the ignition off.
Disconnect the Sun Sensor harness connector.
Turn the ignition on.
Measure the voltage of the (G139) Sun Sensor No. 2 Signal circuit.
What voltage is present?
Above 5.2 Volts
Go To 2
4.8 Volts to 5.2 Volts
Go To 3
Below 4.8 Volts
Go To 5
2.
CHECK (G139) SUN SENSOR NO. 2 SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE
Turn the ignition off.
Disconnect the A/C Heater Control C1 harness connector.
Turn the ignition on.
Measure the voltage of the (G139) Sun Sensor No. 2 Signal circuit.
Is the voltage above 0.2 volts?
Yes
>> Repair the (G139) Sun Sensor No. 2 Signal circuit for a
short to voltage.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
-
ELECTRICAL/ELECTRONIC
CONTROL
MODULES/
FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING).
No
>> Replace the A/C Heater Control in accordance with the Ser-
vice Information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
-
ELECTRICAL/ELECTRONIC
CONTROL
MODULES/
FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
24 - 290
HVAC - ELECTRICAL DIAGNOSTICS
LX
ING).
3.
CHECK (G939) SUN SENSOR RETURN CIRCUIT FUNCTION
Turn the ignition off.
Connect a jumper wire between the (G139) Sun Sensor No. 2 Signal
circuit and the (G939) Sun Sensor Return circuit in the Sun Sensor har-
ness connector.
Turn the ignition on.
With the scan tool in HVAC, select Data Display and read the Right
Solar Sensor voltage.
Is the voltage below 0.2 volts?
Yes
>> Replace the Sun Sensor in accordance with the Service
Information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
-
ELECTRICAL/ELECTRONIC
CONTROL
MODULES/
FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING).
No
>> Go To 4
4.
CHECK (G939) SUN SENSOR RETURN CIRCUIT FOR AN OPEN
Turn the ignition off.
Disconnect the A/C Heater Control C1 harness connector.
Measure the resistance of the (G939) Sun Sensor Return circuit
between the Sun Sensor harness connector and the A/C Heater Control
C1 harness connector.
Is the resistance below 5.0 ohms?
Yes
>> Replace the A/C Heater Control in accordance with the Ser-
vice Information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
-
ELECTRICAL/ELECTRONIC
CONTROL
MODULES/
FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING).
No
>> Repair the (G939) Sun Sensor Return circuit for an open.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
-
ELECTRICAL/ELECTRONIC
CONTROL
MODULES/
FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING).
LX
HVAC - ELECTRICAL DIAGNOSTICS
24 - 291
5.
CHECK (G139) SUN SENSOR NO. 2 SIGNAL CIRCUIT FOR AN OPEN
Turn the ignition off.
Disconnect the A/C Heater Control C1 harness connector.
Measure the resistance of the (G139) Sun Sensor No. 2 Signal circuit
between the Sun Sensor harness connector and the A/C Heater Control
C1 harness connector.
Is the resistance below 5.0 ohms?
Yes
>> Replace the A/C Heater Control in accordance with the Ser-
vice Information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
-
ELECTRICAL/ELECTRONIC
CONTROL
MODULES/
FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING).
No
>> Repair the (G139) Sun Sensor No. 2 Signal circuit for an
open.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
-
ELECTRICAL/ELECTRONIC
CONTROL
MODULES/
FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING).
24 - 292
HVAC - ELECTRICAL DIAGNOSTICS
LX
B1610–AMBIENT LIGHT SENSOR INPUT CIRCUIT LOW (ATC)
For a complete wiring diagram Refer to Section 8W.
LX
HVAC - ELECTRICAL DIAGNOSTICS
24 - 293
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