Dodge Dakota (R1). Manual — part 166
TEST
ACTION
APPLICABILITY
4
Turn the ignition on.
With the DRB, actuate the Wait To Start Lamp.
Does the Wait To Start Lamp cycle on and off?
All
Yes
→
The Wait To Start Lamp System is operating properly. Test
complete.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
5
Turn the ignition off.
Disconnect the ECM harness connectors.
Turn the ignition on.
Connect a jumper wire between ground and the Wait To Start Lamp Control circuit
in the ECM C1 harness connector.
Is the Wait To Start Lamp on?
All
Yes
→
Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
6
Turn the ignition off.
Disconnect the ECM harness connectors.
Remove the ASD/Diesel Power Relay from the PDC.
Connect a jumper wire between ASD/Diesel Power Relay connector cavities 30 and 87
(in PDC).
Turn the ignition on.
Measure the voltage of the Wait To Start Lamp Control circuit.
Is the voltage below 0.5 volt?
All
Yes
→
No
→
Repair the Wait To Start Lamp Control circuit for a short to
voltage.
Perform ROAD TEST VERIFICATION - VER-2.
7
Turn the ignition off.
Disconnect the ECM harness connectors.
Measure the resistance of the Wait To Start Lamp Control circuit.
Is the resistance below 5.0 ohms?
All
Yes
→
No
→
Repair the Wait To Start Lamp Control circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
8
Turn the ignition off.
Remove and inspect the Wait To Start Lamp bulb from the Instrument Cluster.
Is the bulb OK?
All
Yes
→
Replace the Instrument Cluster in accordance with the Service
Information.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Replace the Wait To Start Lamp bulb.
Perform ROAD TEST VERIFICATION - VER-2.
199
DRIVEABILITY - DIESEL
*CHECKING THE WAIT TO START LAMP OPERATION —
Continued
Symptom:
*CHECKING THE WATER IN FUEL LAMP OPERATION
POSSIBLE CAUSES
INSTRUMENT CLUSTER
PCM
PCM - WATER IN FUEL SIGNAL CIRCUIT
SENSOR GROUND CIRCUIT OPEN
WATER IN FUEL LAMP BULB
WATER IN FUEL LAMP SENSOR - SHORTED
WATER IN FUEL SENOR SIGNAL CIRCUIT OPEN
WATER IN FUEL SENSOR - OPEN
WATER IN FUEL SENSOR SIGNAL CIRCUIT SHORT TO GROUND
WATER IN FUEL SENSOR SIGNAL CIRCUIT SHORT TO SENSOR GROUND
TEST
ACTION
APPLICABILITY
1
NOTE: Be sure a water in fuel condition does not exist before continuing.
Turn the ignition on while monitoring the Water In Fuel Lamp.
Choose the appropriate answer.
All
The lamp turns on and stays on.
The lamp turns on for 2 seconds then off
The lamp does not turn on at all.
2
Turn the ignition off.
Disconnect the Water In Fuel Sensor harness connector.
Turn the ignition on while observing the Water In Fuel Lamp.
Does the Water In Fuel Lamp turn on and stay on?
All
Yes
→
No
→
Replace the Water In Fuel Lamp Sensor.
Perform ROAD TEST VERIFICATION - VER-2.
3
Turn the ignition off.
Disconnect the PCM harness connectors.
Disconnect the Water In Fuel Sensor harness connector.
Measure the resistance between ground and the Water In Fuel Sensor Signal circuit.
Is the resistance above 100 kohms?
All
Yes
→
No
→
Repair the Water In Fuel Sensor Signal circuit for a short to
ground.
Perform ROAD TEST VERIFICATION - VER-2.
200
DRIVEABILITY - DIESEL
TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Disconnect the PCM harness connectors.
Disconnect the Water In Fuel Sensor harness connector.
Measure the resistance between Sensor Ground and the Water In Fuel Sensor Signal
circuit.
Is the resistance above 100 kohms?
All
Yes
→
Replace and program the PCM in accordance with the Service
Information.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Repair the Water In Fuel Sensor Signal circuit for a short to the
Sensor Ground circuit.
Perform ROAD TEST VERIFICATION - VER-2.
5
Turn the ignition off.
Disconnect the Water In Fuel Sensor harness connector.
Turn the ignition on.
Connect a jumper wire across the Water In Fuel Sensor harness connector cavities 1
and 2.
Observe the Water In Fuel Lamp for at least 30 seconds.
Is the lamp on?
All
Yes
→
Replace the Water In Fuel Sensor.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
6
Turn the ignition off.
Disconnect the Water In Fuel Sensor harness connector.
Disconnect the PCM harness connectors.
Measure the resistance of the Water In Fuel Sensor Signal circuit.
Is the resistance below 5.0 ohms?
All
Yes
→
No
→
Repair the Water In Fuel Sensor Signal circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
7
Turn the ignition off.
Disconnect the Water In Fuel Sensor harness connector.
Disconnect the PCM harness connectors.
Measure the resistance of the Sensor Ground circuit.
Is the resistance below 5.0 ohms?
All
Yes
→
Replace and program the PCM in accordance with the Service
Information.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Repair the Sensor Ground circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
8
Turn the ignition off.
Remove and inspect the Water In Fuel Lamp bulb.
Is the bulb OK?
All
Yes
→
Replace the Instrument Cluster.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Replace the Water In Fuel Lamp bulb.
Perform ROAD TEST VERIFICATION - VER-2.
201
DRIVEABILITY - DIESEL
*CHECKING THE WATER IN FUEL LAMP OPERATION —
Continued
Symptom:
P1598-A/C PRESSURE SENSOR SIGNAL HIGH
When Monitored and Set Condition:
P1598-A/C PRESSURE SENSOR SIGNAL HIGH
When Monitored:
With the engine running and the A/C on.
Set Condition:
The voltage on the A/C Pressure Sensor Signal circuit exceeds 4.92 volts
for more than 2.8 seconds.
POSSIBLE CAUSES
INTERMITTENT CONDITION
A/C PRESSURE SENSOR SIGNAL CIRCUIT SHORTED TO 5 VOLT SUPPLY CIRCUIT
A/C PRESSURE SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
A/C PRESSURE SENSOR
A/C PRESSURE SENSOR SIGNAL CIRCUIT OPEN
SENSOR GROUND CIRCUIT OPEN
PCM
TEST
ACTION
APPLICABILITY
1
NOTE: Ensure the A/C refrigerant System is properly charged per the
Service Information.
Start the engine.
With the DRBIII
t, read the A/C Pressure Sensor voltage.
Is the voltage above 4.6 volts.
All
Yes
→
No
→
2
Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between the A/C Pressure Sensor Signal circuit and the
5-Volt Supply circuit in the A/C Pressure Sensor harness connector.
Is the resistance above 100 kohms?
All
Yes
→
No
→
Repair the A/C Pressure Sensor Signal circuit for a short to the
5-Volt Supply circuit.
Perform ROAD TEST VERIFICATION - VER - 2.
202
HEATING & A/C
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