Jeep Grand Cherokee WK. Manual — part 1263
FUEL INJECTION
TABLE OF CONTENTS
page
page
PEDAL-ACCELERATOR
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
. . . . . . . . . . . . . . . . . . . . . . . . . 28
SENSOR-ACCELERATOR PEDAL POSITION
. . . . . . . . . . . . . . . . . . . . . . . . . 30
. . . . . . . . . . . . . . . . . . . . . . . . . . . 30
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
. . . . . . . . . . . . . . . . . . . . . . . . . 30
SENSOR-CRANKSHAFT POSITION
. . . . . . . . . . . . . . . . . . . . . . . . . 30
. . . . . . . . . . . . . . . . . . . . . . . . . . . 31
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
. . . . . . . . . . . . . . . . . . . . . . . . . 33
INJECTOR-FUEL
. . . . . . . . . . . . . . . . . . . . . . . . . 34
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
. . . . . . . . . . . . . . . . . . . . . . . . . 36
RELAY-FUEL PUMP
. . . . . . . . . . . . . . . . . . . . . . . . . 36
. . . . . . . . . . . . . . . . . . . . . . . . . . . 36
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
. . . . . . . . . . . . . . . . . . . . . . . . . 36
MOTOR-IDLE AIR CONTROL
. . . . . . . . . . . . . . . . . . . . . . . . . 36
. . . . . . . . . . . . . . . . . . . . . . . . . . . 37
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
. . . . . . . . . . . . . . . . . . . . . . . . . 39
SENSOR-INTAKE AIR TEMPERATURE
. . . . . . . . . . . . . . . . . . . . . . . . . 39
. . . . . . . . . . . . . . . . . . . . . . . . . . . 39
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
. . . . . . . . . . . . . . . . . . . . . . . . . 42
SENSOR-MAP
. . . . . . . . . . . . . . . . . . . . . . . . . 42
. . . . . . . . . . . . . . . . . . . . . . . . . . . 43
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
. . . . . . . . . . . . . . . . . . . . . . . . . 46
SENSOR-OXYGEN
. . . . . . . . . . . . . . . . . . . . . . . . . 47
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
. . . . . . . . . . . . . . . . . . . . . . . . . 48
THROTTLE BODY
. . . . . . . . . . . . . . . . . . . . . . . . . 48
. . . . . . . . . . . . . . . . . . . . . . . . . . . 48
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
. . . . . . . . . . . . . . . . . . . . . . . . . 50
CABLE-THROTTLE CONTROL
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
. . . . . . . . . . . . . . . . . . . . . . . . . 55
SENSOR-THROTTLE POSITION
. . . . . . . . . . . . . . . . . . . . . . . . . 57
. . . . . . . . . . . . . . . . . . . . . . . . . . . 57
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
. . . . . . . . . . . . . . . . . . . . . . . . . 59
PEDAL-ACCELERATOR
REMOVAL
Without APPS (Accelerator Pedal Position Sensor)
The following procedure applies only to vehicles without the Adjustable Pedal Package (code XAP). It also applies
to vehicles not equipped with an accelerator pedal position sensor.
The accelerator pedal is serviced as a complete assembly including the bracket.
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1. From inside the vehicle, hold up accelerator pedal. Remove plastic cable retainer (clip) (2) and throttle cable core
wire from upper end of accelerator pedal arm. Plastic cable retainer (clip) (2) snaps into top of pedal arm.
2. Remove two accelerator pedal mounting bracket
nuts (3). Remove accelerator pedal assembly (2).
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With APPS (Accelerator Pedal Position Sensor)
The following procedure applies only to vehicles with-
out the Adjustable Pedal Package (code XAP). It also
applies to vehicles equipped with an accelerator
pedal position sensor (6).
The accelerator pedal is serviced as a complete
assembly including the bracket.
1. Disconnect electrical connector (3) at APPS (6).
2. Remove two accelerator pedal mounting bracket
nuts (4). Remove accelerator pedal assembly.
3. Remove three sensor-to-pedal nuts (5). Remove
APPS from accelerator pedal assembly.
INSTALLATION
Without APPS (Accelerator Pedal Position Sensor)
The following procedure applies only to vehicles without the Adjustable Pedal Package (code XAP). It also applies
to vehicles not equipped with an accelerator pedal position sensor.
The accelerator pedal is serviced as a complete assembly including the bracket.
1. Place accelerator pedal assembly (2) over two
mounting studs (1).
2. Install and tighten two mounting nuts (3). Refer to
Torque Specifications.
3. Slide throttle cable into opening slot in top of pedal
arm.
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4. Push plastic cable retainer (clip) (2) into accelerator pedal arm opening until it snaps into place.
5. Before starting engine, operate accelerator pedal to check for any binding.
With APPS (Accelerator Pedal Position Sensor)
The following procedure applies only to vehicles without the Adjustable Pedal Package (code XAP). It also applies
to vehicles equipped with an accelerator pedal position sensor.
The accelerator pedal is serviced as a complete assembly including the bracket.
1. Install APPS to pedal assembly and install three
nuts (5).
2. Place accelerator pedal assembly over two mount-
ing studs (1).
3. Install and tighten two mounting nuts (4). Refer to
Torque Specifications.
4. Install electrical connector (3) to APPS (6).
5. Use a scan tool may to learn electrical parameters.
Go to the Miscellaneous menu, and then select
ETC Learn.
6. If the previous step is not performed, a Diagnostic
Trouble Code (DTC) will be set.
7. If necessary, also use a scan tool to erase any
Diagnostic Trouble Codes (DTC’s) from PCM.
8. Before starting engine, operate accelerator pedal to
check for any binding.
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