Jeep XJ. Manual — part 620
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Fuel Injection Pump harness connector.
Measure the resistance between ground and the Fuel Timing Solenoid Control
circuit.
Is the resistance above 100 kohms?
All
Yes
→
No
→
Repair the Fuel Timing Solenoid Control circuit for a short to
ground.
Perform ROAD TEST VERIFICATION - VER-2.
4
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Fuel Injection Pump harness connector.
Measure the resistance of the Fuel Timing Solenoid Control circuit.
Is the resistance below 5.0 ohms?
All
Yes
→
No
→
Repair the Fuel Timing Solenoid Control circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
5
Turn the ignition off.
Disconnect the Fuel Injection Pump harness connector.
Measure the resistance of the Fuel Timing Solenoid at the Fuel Injection Pump
connector (fuel pump side) between cavities 5 and 10.
Is the resistance between 12.0 and 20.0 ohms?
All
Yes
→
No
→
Replace the Fuel Injection Pump in accordance with the Service
Information.
Perform ROAD TEST VERIFICATION - VER-2.
6
Disconnect the Fuel Injection Pump harness connector.
Measure the resistance between the following cavities in the Fuel Injection Pump
connector (fuel pump side):
Cavity 1 to cavities 4, 5, 6, 7, 8, 9, and 10.
Cavity 4 to cavities 5, 6, 7, 8, 9, and 10.
Cavity 5 to cavities 6, 7, 8, and 9.
Cavity 7 to cavities 6, 8, 9, and 10.
Cavity 8 to cavities 6 and 10.
NOTE: The resistance should be above 100 ohms for all measurements.
Is the resistance above 100 ohms for each of the measurements?
All
Yes
→
Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Replace the Fuel Injection Pump in accordance with the Service
Information.
Perform ROAD TEST VERIFICATION - VER-2.
7
Remove and inspect the ASD Relay Output Fuse from the PDC.
Is the fuse OK?
All
Yes
→
Repair the Fused ASD Relay Output circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
132
DRIVEABILITY - DIESEL
P1630-SOLENOID VALVE CONTROLLER OPEN CIRCUIT —
Continued
TEST
ACTION
APPLICABILITY
8
Turn the ignition off.
Remove the ASD Relay Output Fuse.
Measure the resistance between ground and the Fused ASD Relay Output circuit.
Is the resistance above 100 kohms?
All
Yes
→
Replace the Fuel Injection Pump in accordance with the Service
Information.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Repair the Fused ASD Relay Output circuit for a short to ground.
Perform ROAD TEST VERIFICATION - VER-2.
9
WARNING: KEEP CLEAR OF THE ENGINE’S MOVING PARTS.
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.
133
DRIVEABILITY - DIESEL
P1630-SOLENOID VALVE CONTROLLER OPEN CIRCUIT —
Continued
Symptom:
P1630-SOLENOID VALVE CONTROLLER SHORT CIRCUIT
When Monitored and Set Condition:
P1630-SOLENOID VALVE CONTROLLER SHORT CIRCUIT
When Monitored:
With the ignition on.
Set Condition:
The ECM detects excessive current draw on the fuel timing solenoid
control circuit.
POSSIBLE CAUSES
INTERMITTENT CONDITION
FUEL TIMING SOLENOID (FUEL INJECTION PUMP) SHORTED TO VOLTAGE INTERNALLY
FUEL TIMING SOLENOID CONTROL CIRCUIT SHORTED TO VOLTAGE
INTERNAL FUEL INJECTION PUMP TEST
ENGINE CONTROL MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRB, erase ECM DTCs.
Turn the ignition off, wait 30 seconds, then turn the ignition on.
With the DRB, read ECM DTCs.
Did this DTC reset?
All
Yes
→
No
→
2
Turn the ignition off.
Disconnect the Fuel Injection Pump harness connector.
Turn the ignition on.
With the DRB, erase ECM DTCs and then read ECM DTCS.
Did DTC P1630 SOLENOID VALVE CONTROLLER OPEN CIRCUIT set?
All
Yes
→
Replace the Fuel Injection Pump in accordance with the Service
Information.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
134
DRIVEABILITY - DIESEL
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Fuel Injection Pump harness connector.
Remove the ASD/Diesel Power Relay from the PDC.
Connect a jumper wire between cavity 30 and cavity 87 of the ASD/Diesel Power
Relay connector.
Turn the ignition on.
Measure the voltage of the Fuel Timing Solenoid Control circuit.
Is the voltage below 0.5 volt?
All
Yes
→
No
→
Repair the Fuel Timing Solenoid Control circuit for a short to
voltage.
Perform ROAD TEST VERIFICATION - VER-2.
4
Disconnect the Fuel Injection Pump harness connector.
Measure the resistance between the following cavities in the Fuel Injection Pump
connector (fuel pump side):
Cavity 1 to cavities 4, 5, 6, 7, 8, 9, and 10.
Cavity 4 to cavities 5, 6, 7, 8, 9, and 10.
Cavity 5 to cavities 6, 7, 8, and 9.
Cavity 7 to cavities 6, 8, 9, and 10.
Cavity 8 to cavities 6 and 10.
NOTE: The resistance should be above 100 ohms for all measurements.
Is the resistance above 100 ohms for each of the measurements?
All
Yes
→
Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Replace the Fuel Injection Pump in accordance with the Service
Information.
Perform ROAD TEST VERIFICATION - VER-2.
5
WARNING: KEEP CLEAR OF THE ENGINE’S MOVING PARTS.
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.
135
DRIVEABILITY - DIESEL
P1630-SOLENOID VALVE CONTROLLER SHORT CIRCUIT —
Continued
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст