DaimlerChrysler Jeep Grand Cherokee 2002, Руководство по обслуживанию

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TEST ACTION APPLICABILITY
3 Using a temperature probe, check the vehicle temperature near the ECT Sensor.
Turn the ignition on.
With the DRBIII
t
in Sensors, read the ECT Sensor temperature.
Compare the temperature probe reading with the DRBIII
t
reading.
Are the two readings within 10°C of each other?
All
Yes
→
Go To 4
No
→
Repair as necessary.
Perform NO START VERIFICATION - VER-1.
4 NOTE: Prior to performing this test, be sure to check the Glow Plug Relay
operation. Refer to CHECKING GLOW PLUG OPERATION for the related
symptom(s).
Refer to the Service Information and check the Glow Plugs for proper operation.
Are the Glow Plugs operating properly? All
Yes
→
Go To 5
No
→
Repair as necessary.
Perform NO START VERIFICATION - VER-1.
5 Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect all 5 Fuel Injector harness connectors.
Measure the resistance between Ground and each Fuel Injector Driver circuit at it’s
respective Fuel Injector harness connector.
Is the resistance below 1000 ohms for any of the measurements? All
Yes
→
Repair the Fuel Injector Driver circuit(s) for a short to ground.
Perform NO START VERIFICATION - VER-1.
No
→
Go To 6
6 Inspect the fuel system lines for restrictions, leaks or other problems.
Is there any evidence of problems? All
Yes
→
Repair as necessary.
Perform NO START VERIFICATION - VER-1.
No
→
Go To 7
7 Turn the ignition off.
Using the DRBIII
t
lab scope, backprobe the CMP Sensor Signal circuit at the ECM
harness connector.
Start the engine, if the engine will not start, crank the engine for several seconds
while monitoring the DRBIII
t
.
NOTE: Refer to Charts and Graphs to view a correct CMP Sensor signal.
Does the DRBIII
t
display a steady clean CMP Signal pattern?
All
Yes
→
Go To 8
No
→
Perform Test for DTC P0340-Camshaft Position Sensor Circuit
Static Plausibility.
Perform NO START VERIFICATION - VER-1.
235
DRIVEABILITY - DIESEL
*ENGINE CRANKS BUT WILL NOT START —
Continued
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