Jeep Grand Cherokee WK. Manual — part 1273
5. Connect Adapter 8630-4 to the power steering gear.
6. Open the test valve completely.
7. Start engine and let idle long enough to circulate power steering fluid through the flow/pressure test gauge.
8. Shut off the engine and check the fluid level, add fluid ass necessary. Start engine again and let idle.
9. The initial pressure reading should be 345-552 kPa (50-80 psi). If pressure is higher inspect the hoses for restric-
tions and repair as necessary.
10. Increase the engine speed to 1500 RPM and read the flow meter. The reading should be 2.4 - 2.8 GPM if the
reading is below this specification the fan should be replaced.
CAUTION: This next step involves testing maximum fan motor steering relief pressure. Do not leave the
valve closed for more than three seconds.
11. Close the valve fully three times for three seconds and record highest pressures indicated each time. All three
readings must be at fan motor steering relief pressures.
12. Open the test valve and turn the steering wheel to the extreme left and right positions against the stops. Record
the highest pressure readings at each position. If pressure readings are not within 50 psi from each other, the
gear is leaking internally and must be repaired.
PUMP SPECIFICATIONS
ENGINE
RELIEF PRESSURE ± 50
FLOW RATE (GPM)
5.7L
1241 kPa (1800 psi)
1500 RPM 2.9 - 3.3 GPM Minium
@ 200 psi
SPECIFICATIONS
TORQUE CHART
TORQUE SPECIFICATIONS
DESCRIPTION
N·m
Ft. Lbs.
In. Lbs.
Pitman Arm
Shaft Nut
251
185
—
Drag Link
Pitman Arm Nut
88
65
—
Drag Link
Knuckle Nut
47
35
—
Drag Link
Clamp Nuts
41
30
—
Tie Rod
Knuckle Nut
47
35
—
Tie Rod
Clamp Nuts
41
30
—
Steering Damper
Axle Bolt
88
65
—
Steering Damper
Tie Rod Nut
41
30
—
19 - 6
STEERING
WK
SPECIAL TOOLS
STEERING LINKAGE
PULLER - 8677
ADAPTER, POWER STEERING FLOW/PRESSURE -
6825A
QUICK CONNECT TOOL - 8875-A
WK
STEERING
19 - 7
COLUMN - ELECTRICAL DIAGNOSTICS
TABLE OF CONTENTS
page
page
COLUMN - ELECTRICAL DIAGNOSTICS
C1240-STEERING ANGLE SENSOR ANGLE
OVERTRAVEL PERFORMANCE . . . . . . . . . . . . 9
VELOCITY PERFORMANCE . . . . . . . . . . . . . . 11
INTERNAL . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
B2108–IGNITION SWITCH SENSE INPUT
CIRCUIT LOW . . . . . . . . . . . . . . . . . . . . . . . . 13
B2109–IGNITION SWITCH SENSE INPUT
CIRCUIT HIGH . . . . . . . . . . . . . . . . . . . . . . . . 15
INTERNAL . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
. . . . . . . . . . . . . . . . . . . . 22
U0021-CAN B BUS (+) CIRCUIT OPEN
U0022-CAN B BUS (+) CIRCUIT LOW
U0023-CAN B BUS (+) CIRCUIT HIGH
U0024-CAN B BUS (-) CIRCUIT OPEN
U0025-CAN B BUS (-) CIRCUIT LOW
U0026-CAN B BUS (-) CIRCUIT HIGH
U0027-CAN B BUS (-) SHORTED TO BUS
(+) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
FRONT CONTROL MODULE . . . . . . . . . . . . . 25
OCCUPANT RESTRAINT CONTROLLER . . . . 25
OCCUPANT CLASSIFICATION MODULE . . . . 26
CLUSTER/CCN . . . . . . . . . . . . . . . . . . . . . . . 26
U0156-LOST COMMUNICATION WITH EOM
PARKING ASSIST CONTROL MODULE . . . . . 26
U0164-LOST COMMUNICATION WITH HVAC
CONTROL MODULE . . . . . . . . . . . . . . . . . . . 26
INTRUSION TRANSCEIVER CONTROL
MODULE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
VEHICLE SECURITY CONTROL MODULE
(SKREEM/WCM) . . . . . . . . . . . . . . . . . . . . . . 26
SUNROOF CONTROL MODULE . . . . . . . . . . 26
RADIO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
AUDIO AMPLIFIER . . . . . . . . . . . . . . . . . . . . . 27
SDARS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
VEHICLE ENTERTAINMENT CONTROL
MODULE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
HANDS FREE MODULE . . . . . . . . . . . . . . . . . 27
DRIVER DOOR MODULE . . . . . . . . . . . . . . . . 27
PASSENGER DOOR MODULE . . . . . . . . . . . . 27
HEATED SEAT CONTROL MODULE . . . . . . . 27
MEMORY SEAT CONTROL MODULE . . . . . . . 27
U0231-LOST COMMUNICATION WITH RAIN
SENSING MODULE . . . . . . . . . . . . . . . . . . . . 27
U0241-LOST COMMUNICATION WITH AUTO
HIGHBEAM HEADLAMP CONTROL
MODULE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
COLUMN - ELECTRICAL DIAGNOSTICS
DIAGNOSIS AND TESTING
19 - 8
COLUMN - ELECTRICAL DIAGNOSTICS
WK
C1240-STEERING ANGLE SENSOR ANGLE OVERTRAVEL PERFORMANCE
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
Continuously.
•
Set Condition:
The Steering Column Module (SCM) has detected that the Steering Angle Sensor travel (rotation) has
exceeded 900 degrees.
Possible Causes
INTERMITTENT STEERING ANGLE SENSOR ANGLE OVERTRAVEL PERFORMANCE DTC
STEERING OR FRONT SUSPENSION COMPONENT DAMAGE
STEERING COLUMN MODULE (SCM)
Diagnostic Test
1.
DTC IS ACTIVE
NOTE: If B210D–BATTERY VOLTAGE LOW or B210E–BATTERY VOLTAGE HIGH is set along with this DTC,
diagnose the battery voltage DTC first.
Ignition on, engine not running.
Turn the steering wheel from stop to stop at least three times.
With the Scan Tool, select View DTCs in the Steering Column Module.
Is the DTC status Active at this time?
Yes
>> Go to 2
No
>> Go to 4
2.
STEERING OR FRONT SUSPENSION COMPONENT DAMAGE
Inspect the front suspension and steering components for damage or wear that may cause a steering column over-
travel condition.
Were any problems found?
Yes
>> Repair or replace front suspension or steering components as necessary in accordance with the Service
Information.
No
>> Go To 3
3.
STEERING COLUMN MODULE (SCM)
Remove the Steering Column Module in accordance with the Service Information. Inspect the steering column for
any problem that can result in a steering column overtravel condition. If any problems are found, repair as neces-
sary. If no problems are found, view repair.
Repair
Replace the Steering Column Module (SCM) in accordance with the Service Information.
WK
COLUMN - ELECTRICAL DIAGNOSTICS
19 - 9
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