1988 JEEP CHEROKEE remote control

"P" ABBREVIATION TABLE
"P" ABBREVIATION TABLE







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ABBREVIATION DEFINITION 










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"P" Park 

P/C Printed Circuit 

P/N Park/Neutral 

P/S Power Steering 

PAV Pulse Air Valve 

PC-SOL Purge Control Solenoid 

PCM Powertrain Control Module 

PCS Purge Control Solenoid 

PCSDM Passenger Compartment Sensor/Diagnostic Module 

PCV Positive Crankcase Ventilation 

PFE Pressure Feedback EGR sensor or circuit 

PFI Port Fuel Injection (see MA SEFI) 

PGM-CARB Programmed Carburetor 

PGM-FI Programmed Fuel Injection 

PIP Profile Ignition Pickup 

PNK Pink 

PPL Purple 

PRNDL Park Reverse Neutral Drive Low 

PROM Programmable Read-Only Memory 

psi Pounds Per Square Inch 

PSPS Power Steering Pressure Switch 

PTC Positive Temperature Coefficient 

PTO Power Take-Off 

PWR GND Power Ground circuit 

Pkg. Package 

Press. Pressure 

Prog. Programmed or Programmable 

Pts. Pints 

Pwr. Power 











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"Q" ABBREVIATION TABLE
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ABBREVIATION DEFINITION 










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Qts. Quarts 











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"R" ABBREVIATION TABLE
"R" ABBREVIATION TABLE







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ABBREVIATION DEFINITION 










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RABS Rear Anti-Lock Brake System 

RAC Remote Accessory Control 

RAM Random Access Memory 

RAP Retained Accessory Power 

RECIRC Recirculation 

RED Red 

RH Right Hand 

ROM Read Only Memory 

RPM Revolutions Per Minute 

remote vacuum regulator. The internal solenoid is normally open, which
causes the vacuum signal to be vented off to the atmosphere when EGR
is not controlled by the Electronic Control Module (ECM). The solenoid\
valve opens and closes the vacuum signal, controlling the amount of
vacuum applied to the diaphragm. See Fig. 12.
The electronic EGR valve contains a voltage regulator, which
converts ECM signal and regulates current to the solenoid. The ECM
controls EGR flow with a pulse width modulated signal based on
airflow, TPS and RPM. This system also contains a pintle position
sensor, which works similarly to a TPS sensor. As EGR flow is
increased, the sensor output increases.
Verify EGR valve is present and not modified or purposely
damaged. Ensure thermal vacuum switches, pressure transducers, speed
switches, etc., (if applicable) are not by-passed or modified. Ensure
electrical connector to EGR valve is not disconnected.
Fig. 12: Cutaway View Of Typical Integrated Electronic EGR Valve
Courtesy of General Motors Corp.
SPARK CONTROLS (SPK)

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STA R TE R - B O SC H/M IT S U BIS H I

1 988 J e ep C hero ke e
1988 Starters
BOSCH & MITSUBISHI
Jeep with 4.0L 6-Cyl.
DESCRIPTION
NOTE: Information on Jeep 2.5L starter not available from
manufacturer.
Bosch and Mitsubishi use a permanent magnet starter. A
planetary gear train transmits power between starter motor and pinion
shaft. The starter magnetic field is produced by 6 permanent magnets.
The Mitsubishi starter is a 12-volt unit that has the solenoid mounted
on the starter housing. See Fig. 3.
TROUBLE SHOOTING
NOTE: See the TROUBLE SHOOTING - BASIC PROCEDURES article
in the GENERAL TROUBLE SHOOTING section.
TESTING (ON VEHICLE)
AMPERAGE DRAW TEST
NOTE: Engine should be at operating temperature before performing
this test. Heavy duty oil or a tight engine will increase
starter draw amperage. Tests are performed with standard
volt-ammeter tester.
1) Connect tester and remote starter switch. Set voltmeter
selector to 16-volt position. Select function to 0-500-amp scale.
Connect voltmeter leads to corresponding polarity battery terminals.
2) Connect ammeter leads to corresponding battery terminals.
Disconnect coil wire from distributor cap and attach to ground to
prevent engine from starting.
3) Crank engine and observe exact reading on voltmeter. Stop
cranking engine. Turn tester control knob clockwise until voltmeter
reads exactly the same as when engine was cranked with remote starter
switch. Ammeter should indicate starter draw of about 150-220 amps.
STARTER RESISTANCE TEST
Use a voltmeter that will indicate tenths of a volt. Without
disconnecting any starter connections, perform the following
resistance tests:
1) Perform following tests with engine cranking and all
terminals connected. Connect a voltmeter at following locations:
* Positive lead to battery positive post and negative lead
to battery terminal on starter.
* Positive lead to starter housing and negative lead to
negative post on battery.
* Positive lead to battery negative post and negative lead
to battery cable connector on engine block.
2) Each of these 3 connections should show a voltmeter