Dodge Dakota (ND). Manual — part 1109
C1401- TRANSFER CASE RANGE SELECT SWITCH CIRCUIT LOW
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TRANSFER CASE - ELECTRICAL DIAGNOSTICS
ND
C1401- TRANSFER CASE RANGE SELECT SWITCH CIRCUIT LOW (CONTINUED)
For a complete wiring diagram Refer to Section 8W
•
When Monitored:
With the ignition on.
•
Set Condition:
Transfer Case Range Select Switch voltage less than 0.1568 volts for 5 seconds
Possible Causes
INTERMITTENT CONDITION
(K77) 5 VOLT SELECTOR SWITCH SUPPLY CIRCUIT OPEN
(K77) 5 VOLT SELECTOR SWITCH SUPPLY CIRCUIT SHORTED TO GROUND
(K977) MODE SELECT CIRCUIT OPEN
(K977) MODE SELECT CIRCUIT SHORT TO GROUND
TRANSFER CASE SELECTOR SWITCH
INSTRUMENT CLUSTER
Diagnostic Test
1.
TCASE (DTCM) SWITCH VOLTAGE LESS THAN 0.2 VOLTS
Ignition on, engine not running.
With the scan tool under Data Display, read the TCASE (DTCM) Switch voltage.
Is the voltage less than 0.2 volts?
Yes
>> Go To 2
No
>> Go To 9
2.
(K77) 5 VOLT SELECTOR SWITCH SUPPLY CIRCUIT VOLTAGE LESS THAN 0.2 VOLTS
Turn the ignition off.
Disconnect the Transfer Case Selector Switch connector.
Turn the ignition on.
Measure the voltage of the (K77) 5 Volt Selector Switch Supply circuit.
Is the voltage less than 0.2 volts?
Yes
>> Go To 3
No
>> Go To 5
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TRANSFER CASE - ELECTRICAL DIAGNOSTICS
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C1401- TRANSFER CASE RANGE SELECT SWITCH CIRCUIT LOW (CONTINUED)
3.
(K77) 5 VOLT SELECTOR SWITCH SUPPLY CIRCUIT OPEN
Turn the ignition off.
Disconnect the Instrument Cluster C1 connector.
Measure the resistance of the (K77) 5 Volt Selector Switch Supply cir-
cuit.
Is the resistance greater than 5.0 ohms?
Yes
>> Repair the (K77) 5 Volt Selector Switch Supply circuit for
an open.
Perform the TRANSFER CASE VERIFICATION TEST-
VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/TRANSFER CASE CONTROL MODULE
- DIAGNOSIS AND TESTING)
No
>> Go To 4
4.
(K77) 5 VOLT SELECTOR SWITCH SUPPLY CIRCUIT SHORTED TO GROUND
Measure the resistance between the (K77) 5 Volt Selector Switch Sup-
ply circuit and ground.
Is the resistance less than 5.0 ohms?
Yes
>> Repair the (K77) 5 Volt Selector Switch Supply circuit for a
short to ground.
Perform the TRANSFER CASE VERIFICATION TEST-
VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/TRANSFER CASE CONTROL MODULE
- DIAGNOSIS AND TESTING)
No
>> Go To 8
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TRANSFER CASE - ELECTRICAL DIAGNOSTICS
ND
C1401- TRANSFER CASE RANGE SELECT SWITCH CIRCUIT LOW (CONTINUED)
5.
TRANSFER CASE SELECTOR SWITCH
Turn the ignition off.
Connect a jumper wire between the (K77) 5 Volt Selector Switch Sup-
ply circuit and the (K977) Mode Select circuit in the Transfer Case
Selector Switch connector.
Ignition on, engine not running.
With the scan tool in Data Display, read the Range Switch voltage.
The switch voltage should be approximately 5 volts.
Does the voltage display as described?
Yes
>> Replace the Transfer Case Selector Switch.
Perform the TRANSFER CASE VERIFICATION TEST-
VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/TRANSFER CASE CONTROL MODULE
- DIAGNOSIS AND TESTING)
No
>> Go To 6
6.
(K977) MODE SELECT CIRCUIT SHORT TO GROUND
Disconnect the Instrument Cluster C2 connector.
Measure the resistance between the (K977) Mode Select circuit and
ground.
Is the resistance less than 5.0 ohms?
Yes
>> Repair the (K977) Mode Select circuit for a short to
ground.
Perform the TRANSFER CASE VERIFICATION TEST-
VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/TRANSFER CASE CONTROL MODULE
- DIAGNOSIS AND TESTING)
No
>> Go To 7
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TRANSFER CASE - ELECTRICAL DIAGNOSTICS
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