Jeep Grand Cherokee WK. Manual — part 198
B1D51-ADJUSTABLE PEDAL INHIBIT CIRCUIT OPEN (CONTINUED)
3.
SWAP OUT THE ADJUSTABLE PEDALS RELAY
Turn the ignition off.
Install a substitute relay in place of the Adjustable Pedals Relay.
Turn the ignition on.
With the scan tool, erase DTC’s.
Cycle the ignition switch from off to on.
With the scan tool, read and record DTC’s
Does the scan tool display: B1D4F-ADJUSTABLE PEDAL INHIBIT CIRCUIT LOW?
Yes
>> Go To 4
No
>> Replace the Adjustable Pedals Relay in accordance with the Service Information.
Perform APS VERIFICATION TEST - VER 1.
4.
CHECK THE VOLTAGE ON THE FUSED B(+) CIRCUIT FOR THE ADJUSTABLE PEDALS RELAY
Turn the ignition off.
Remove the Adjustable Pedals Relay from the IPM.
Measure the voltage of the internal Fused B(+) circuit at the IPM.
Is the voltage above 10 volts?
Yes
>> Go To 5
No
>> Replace the IPM in accordance with the Service Information.
Perform APS VERIFICATION TEST - VER 1.
5.
CHECK THE ADJUSTABLE PEDALS RELAY CONTROL CIRCUIT FOR A SHORT TO GROUND
Turn the ignition off.
Disconnect the Front Control Module harness connector.
Remove the Adjustable Pedals Relay from the IPM.
Using a 12-volt test light connected to 12-volts, check the Adjustable Pedals Relay Control circuit.
Does the test light illuminate brightly?
Yes
>> Repair the Adjustable Pedals Relay Control circuit for a short to ground.
Perform APS VERIFICATION TEST - VER 1.
No
>> Go To 6
6.
CHECK THE ADJUSTABLE PEDALS RELAY CONTROL CIRCUIT FOR A SHORT TO VOLTAGE
Turn the ignition off.
Disconnect the Front Control Module harness connector.
Remove the Adjustable Pedals Relay from the IPM.
Turn the ignition on.
Using a 12-volt test light connected to ground, check the Adjustable Pedals Relay Control circuit.
Does the test light illuminate brightly?
Yes
>> Repair the Adjustable Pedals Relay Control circuit for a short to voltage.
Perform APS VERIFICATION TEST - VER 1.
No
>> Go To 7
5 - 418
BRAKES - BRAKE CONTROLLER ELECTRICAL DIAGNOSTICS
WK
B1D51-ADJUSTABLE PEDAL INHIBIT CIRCUIT OPEN (CONTINUED)
7.
CHECK THE ADJUSTABLE PEDALS RELAY CONTROL CIRCUIT FOR AN OPEN
Turn the ignition off.
Disconnect the Front Control Module harness connector.
Remove the Adjustable Pedals Relay from the IPM.
Connect a jumper wire between the Adjustable Pedals Relay Control circuit and ground.
Using a 12-volt test light connected to 12-volts, check the Adjustable Pedals Relay Control circuit.
Does the test light illuminate brightly
Yes
>> Replace the Front Control Module in accordance with the Service Information.
Perform APS VERIFICATION TEST - VER 1.
No
>> Repair the (P201) Adjustable Pedals Relay Control circuit for an open.
Perform APS VERIFICATION TEST - VER 1.
WK
BRAKES - BRAKE CONTROLLER ELECTRICAL DIAGNOSTICS
5 - 419
COOLING
TABLE OF CONTENTS
page
page
COOLING
. . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . 2
. . . . . . . . . . . . . . . . . 3
COOLING SYSTEM DIAGNOSIS CHART
. . . . . . . . . . . . . . 10
REFILLING COOLING SYSTEM - 4.7L
ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
COOLING SYSTEM - REVERSE FLUSHING
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
. . . . . . . . . . . . . . . . . . . . . . . 16
. . . . . . . . . . . . . . . . . . . . . . . . . . . 17
. . . . . . . . . . . . . . . . . . . . . . 18
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
. . . . . . . . . . . . . . . . . . . . . . . . . 67
COOLING
DESCRIPTION
3.7L/4.7L ENGINE
The cooling system consists of the following items:
•
Electric cooling fan - Standard - 3.7L engine.
•
Electric cooling fan and mechanical thermal viscous fan with low disengaged -4.7L engine only
•
Radiator
•
Radiator pressure cap
•
Thermostat
•
Coolant pressure bottle/overflow system
•
Transmission oil cooler (if equipped with an automatic transmission)
•
Power Steering Oil Cooler
•
Coolant
•
Water pump
•
Hoses and hose clamps
5.7L ENGINE
The cooling system consists of the following items:
•
Hydraulic cooling fan
•
Radiator
•
Power steering oil cooler
•
Radiator pressure cap
•
Thermostat
•
Coolant reserve/overflow system
•
Transmission oil cooler (if equipped with an automatic transmission)
•
Coolant
WK
COOLING
7 - 1
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