Dodge Dakota (R1). Manual — part 168
TEST
ACTION
APPLICABILITY
8
Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the 5-Volt Supply circuit between the A/C Pressure Sensor
harness connector and the PCM harness connector.
Is the resistance below 5 ohms?
All
Yes
→
No
→
Repair the 5-Volt Supply circuit for an open.
Perform ROAD TEST VERIFICATION - VER - 2.
9
If there are no possible causes remaining, view repair.
All
Repair
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform ROAD TEST VERIFICATION - VER - 2.
10
WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running and at normal operating temperature, monitor the DRB
parameters related to the DTC while wiggling the wiring harness. Look for param-
eter values to change and/or a DTC to set.
Review the DTC When Monitored and Set Conditions. If possible, try to duplicate the
conditions under which the DTC was set.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?
All
Yes
→
Repair as necessary
Perform ROAD TEST VERIFICATION - VER - 2.
No
→
Test Complete.
207
HEATING & A/C
P1599-A/C PRESSURE SENSOR SIGNAL LOW —
Continued
Symptom:
P1655-AC CONTROL OPEN CIRCUIT - DIESEL
When Monitored and Set Condition:
P1655-AC CONTROL OPEN CIRCUIT - DIESEL
When Monitored:
With the ignition on.
Set Condition:
With the A/C clutch operation not requested, the ECM detects low voltage
on the A/C Clutch Relay Control circuit. NOTE: AC is an option that may not be present
on all vehicles.
POSSIBLE CAUSES
INTERMITTENT CONDITION
ASD/DIESEL POWER RELAY OUTPUT CIRCUIT OPEN
SUBSTITUTE A/C COMPRESSOR CLUTCH RELAY
A/C COMPRESSOR CLUTCH RELAY CONTROL CIRCUIT SHORTED TO GROUND
A/C COMPRESSOR CLUTCH RELAY CONTROL CIRCUIT OPEN
ENGINE CONTROL MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRB, actuate the A/C Compressor Clutch Relay.
Is the A/C Compressor Clutch Relay clicking?
All
Yes
→
No
→
NOTE: Stop the A/C Compressor Clutch Relay actuation by the DRB.
2
WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running at normal operating temperature, monitor the DRB
parameters related to the DTC while wiggling the wiring harness. Look for param-
eter values to change and/or a DTC to set.
Review the DTC When Monitored and Set Conditions. If possible, try to duplicate the
conditions under which the DTC was set.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?
All
Yes
→
Repair as necessary
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Test Complete.
208
HEATING & A/C
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Remove the A/C Compressor Clutch Relay from the PDC.
Turn the ignition on.
Using a 12-volt Test Light connected to ground, check the ASD/Diesel Power Relay
Output circuit.
Did the test light illuminate brightly?
All
Yes
→
No
→
Repair the ASD/Diesel Power Relay Output circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
4
Turn the ignition off.
Install a substitute relay in place of the A/C Compressor Clutch Relay.
Turn the ignition on.
With the DRB, actuate the A/C Compressor Clutch Relay.
Is the A/C Compressor Clutch clicking?
All
Yes
→
Replace the A/C Compressor Clutch Relay.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
5
Turn the ignition off.
Disconnect the ECM harness connector(s).
Remove the A/C Compressor Clutch Relay from the PDC.
Measure the resistance between ground and the A/C Compressor Clutch Relay
Control circuit.
Is the resistance above 100 kohms?
All
Yes
→
No
→
Repair the A/C Compressor Clutch Relay Control circuit for a
short to ground.
Perform ROAD TEST VERIFICATION - VER-2.
6
Turn the ignition off.
Disconnect the ECM harness connector(s).
Remove the A/C Compressor Clutch Relay from the PDC.
Measure the resistance of the A/C Compressor Clutch Relay Control circuit.
Is the resistance below 5.0 ohms?
All
Yes
→
No
→
Repair the A/C Compressor Clutch Relay Control circuit for an
open.
Perform ROAD TEST VERIFICATION - VER-2.
7
If there are no possible causes remaining, view repair.
All
Repair
Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
209
HEATING & A/C
P1655-AC CONTROL OPEN CIRCUIT - DIESEL —
Continued
Symptom:
P1655-AC CONTROL SHORT CIRCUIT - DIESEL
When Monitored and Set Condition:
P1655-AC CONTROL SHORT CIRCUIT - DIESEL
When Monitored:
With the ignition on.
Set Condition:
The ECM detects excessive current draw on the A/C clutch relay control
circuit when attempting to activate the A/C clutch. NOTE: AC is an option that may not be
present on all vehicles.
POSSIBLE CAUSES
INTERMITTENT CONDITION
SUBSTITUTE A/C COMPRESSOR CLUTCH RELAY
A/C COMPRESSOR CLUTCH RELAY CONTROL CIRCUIT SHORTED TO VOLTAGE
ENGINE CONTROL MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRB, actuate the A/C Compressor Clutch Relay.
Is the A/C Compressor Clutch Relay clicking?
All
Yes
→
No
→
NOTE: Stop the A/C Compressor Clutch Relay actuation by the DRB.
2
WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running at normal operating temperature, monitor the DRB
parameters related to the DTC while wiggling the wiring harness. Look for param-
eter values to change and/or a DTC to set.
Review the DTC When Monitored and Set Conditions. If possible, try to duplicate the
conditions under which the DTC was set.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?
All
Yes
→
Repair as necessary
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Test Complete.
210
HEATING & A/C
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст