DaimlerChrysler Jeep Grand Cherokee 2002, Service Manual

Page: 130 / 284

TEST ACTION APPLICABILITY
11 Turn the ignition off.
Disconnect the generator harness connector.
Turn the ignition on.
Measure the voltage of the Fused ASD Relay Output circuit.
Is the voltage above 10.0 volts? All
Yes
→
Go To 12
No
→
Repair the Fused ASD Relay Output circuit for an open.
Perform CHARGING VERIFICATION - VER-3.
12 Turn the ignition off.
Disconnect the ECM harness connectors.
Remove Fuse 26 from the PDC.
Measure the resistance of the B) Sense circuit.
Is the resistance below 5.0 ohms? All
Yes
→
Go To 13
No
→
Repair the B) Sense circuit for high resistance.
Perform CHARGING VERIFICATION - VER-3.
13 Turn the ignition off.
Disconnect the ECM harness connectors.
Measure the resistance of the Battery(-) Sense circuit.
Is the resistance below 5.0 ohms? All
Yes
→
Replace and program the Engine Control Module in accordance
with the Service Information.
Perform CHARGING VERIFICATION - VER-3.
No
→
Repair the Battery(-) Sense circuit for high resistance.
Perform CHARGING VERIFICATION - VER-3.
14 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 CHARGING VERIFICATION - VER-3.
No
→
Test Complete.
122
DRIVEABILITY - DIESEL
P0560-SYSTEM VOLTAGE TOO LOW —
Continued
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