Dodge Dakota (R1). Manual — part 56
Symptom:
HIGH BEAM INDICATOR OUTPUT OPEN
When Monitored and Set Condition:
HIGH BEAM INDICATOR OUTPUT OPEN
When Monitored:
With the CTM Awake.
Set Condition:
The CTM detects 0 (zero) volts on the High Beam Indicator circuit when
the ignition is on and the Headlamp Switch is in the off position. (NOTE: High Beam
Headlamps will operate. The indicator will be inoperative.)
POSSIBLE CAUSES
INTERMITTENT CONDITION
CENTRAL TIMER MODULE
HIGH BEAM INDICATOR OUTPUT OPEN
HIGH BEAM INDICATOR DRIVER CIRCUIT SHORTED TO GROUND
INDICATOR BULB OPEN
INSTRUMENT CLUSTER
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, erase CTM DTCs.
Cycle the ignition to off and then back on.
With the DRBIII
t, read CTM DTCs.
Does the DRBIII
t display High Beam Indicator Output Open?
All
Yes
→
No
→
The condition is not present at this time. Monitor DRBIII
t
parameters while wiggling the related wire harness. Refer to any
Technical Service Bulletins (TSB) that may apply. Visually in-
spect the related wiring harness and connector terminals.
2
Turn the ignition off.
Disconnect the CTM C1 harness connector.
Check connectors - Clean/repair as necessary.
Connect a fused jumper wire between the High Beam Indicator circuit and a known
good ground.
Observe the High Beam Indicator.
Does the High Beam Indicator illuminate?
All
Yes
→
Replace and program the Central Timer Module (CTM) in accor-
dance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→
221
INSTRUMENT CLUSTER
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the CTM C1 harness connector.
Disconnect the Instrument Cluster C2 harness connector.
Check connectors - Clean/repair as necessary.
Measure the resistance of the High Beam Indicator Driver circuit.
Is the resistance below 5.0 ohms?
All
Yes
→
No
→
Repair the open in the High Beam Indicator Driver circuit.
Perform BODY VERIFICATION TEST - VER 1.
4
Turn the ignition off.
Disconnect the CTM C1 harness connector.
Disconnect the Instrument Cluster C2 harness connector.
Check connectors - Clean/repair as necessary.
Measure the resistance of the High Beam Indicator Driver circuit to ground.
Does the resistance measure below 5.0 ohms?
All
Yes
→
Repair the short to ground in the High Beam Indicator Driver
circuit.
Perform BODY VERIFICATION TEST - VER 1.
No
→
5
Turn the ignition off.
Remove the Instrument Cluster.
Check connectors - Clean/repair as necessary.
Inspect the High Beam Indicator bulb.
Is the indicator bulb open?
All
Yes
→
Replace the High Beam Indicator bulb.
Perform BODY VERIFICATION TEST - VER 1.
No
→
Replace the Instrument Cluster in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
222
INSTRUMENT CLUSTER
HIGH BEAM INDICATOR OUTPUT OPEN —
Continued
Symptom:
HIGH BEAM INDICATOR OUTPUT SHORTED TO BATTERY
When Monitored and Set Condition:
HIGH BEAM INDICATOR OUTPUT SHORTED TO BATTERY
When Monitored:
With the CTM Awake.
Set Condition:
The CTM detects voltage on the High Beam Indicator Driver circuit with
the ignition on and the High Beams are actuated. (NOTE: The High Beam Headlamps will
operate. The indicator will be inoperative.)
POSSIBLE CAUSES
INTERMITTENT CONDITION
HIGH BEAM INDICATOR DRIVER CIRCUIT SHORTED TO BATTERY
CENTRAL TIMER MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, erase all CTM DTCs.
Turn the headlamps on.
Actuate the High Beams.
With the DRBIII
t, read CTM DTCs.
Does the DRBIII
t display High Beam Indicator Output Shorted to Battery?
All
Yes
→
No
→
The condition is not present at this time. Refer to any Technical
Service bulletins (TSB) that may apply. Visually insect the related
wiring harness. Look for any chafed, pierced, or partially broken
wires. Inspect connector terminal contact.
2
Turn the ignition off.
Disconnect the CTM C1 harness connector.
Disconnect the Instrument Cluster C2 harness connector.
Check connectors - Clean/repair as necessary.
Measure the voltage of the High Beam Indicator Driver circuit.
Does voltage measure above 1.0 volts?
All
Yes
→
Repair the short to B(+) in the High Beam Indicator Driver
circuit.
Perform BODY VERIFICATION TEST - VER 1.
No
→
Replace and program the Central Timer Module (CTM) in accor-
dance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
223
INSTRUMENT CLUSTER
Symptom:
PRNDL SWITCH CIRCUIT OPEN
When Monitored and Set Condition:
PRNDL SWITCH CIRCUIT OPEN
When Monitored:
With the ignition on.
Set Condition:
The Instrument Cluster detects the fault after the second consecutive
ignition cycle of greater than 3 (three) seconds.
POSSIBLE CAUSES
INTERMITTENT CONDITION
TRANSMISSION RANGE SENSOR 5 VOLT SUPPLY CIRCUIT OPEN
TRANSMISSION RANGE SENSOR MUX CIRCUIT OPEN
TRANSMISSION RANGE SENSOR
INSTRUMENT CLUSTER
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, erase DTCs.
Cycle the ignition to the off position and then to the on position.
With the DRBIII
t, select Body, Electro/Mech Cluster, read DTCs.
Does the DRBIII
t display PRNDL Switch Circuit Open?
All
Yes
→
No
→
The conditions are not present at this time. Monitor DRBIII
t
parameters while wiggling the related wire harness. Refer to any
Technical Service Bulletins (TSB) that may apply. Visually in-
spect both the related harness and the connector terminals.
2
Turn the ignition off.
Disconnect the Transmission Range Sensor harness connector.
Check connectors - Clean/repair as necessary.
Turn the ignition on.
Measure the voltage of the 5 Volt Supply circuit.
Does the voltage measure more than 4.5 volts?
All
Yes
→
No
→
Repair the open in the Transmission Range Sensor 5V Supply
circuit.
Perform BODY VERIFICATION TEST - VER 1.
224
INSTRUMENT CLUSTER
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