Filed Under (Jeep) by admin on 22-04-2010
If vehicle is equipped with air bag, air bag must be deactivated before servicing cruise control components on or around steering column. See appropriate AIR BAG RESTRAINT SYSTEM article in ACCESSORIES & EQUIPMENT. NO CRUISE CONTROL WHEN SET BUTTON IS PRESSED & RELEASED Check for: blown fuse, no vacuum at servo and/or defective servo, disconnected speed control cable, brakelight switch out of adjustment, faulty electrical circuit, faulty Park/Neutral switch input to PCM, faulty PCM. CRUISE CONTROL ENGAGES WITHOUT ACTUATING CRUISE SET BUTTON Check for: defective servo, faulty electrical circuit or control switch. CRUISE CONTROL ENGAGES WHEN ENGINE IS STARTED Check for: defective servo, faulty electrical circuit. ERRATIC SPEED OR ENGINE SHUTS OFF Check for: poor engine performance (surge), defective vehicle speed sensor, vacuum leak, faulty servo, faulty
CRUISE CONTROL DISENGAGES ON ROUGH ROAD Check for: brakelight switch out of adjustment, faulty cruise control switch, faulty electrical circuit. ENGINE DOES NOT RETURN TO NORMAL IDLE Check for: kinked and/or damaged cruise control cable, faulty throttle linkage.
Filed Under (Jeep) by admin on 22-04-2010
INTERIOR LIGHTS Fig. 40: Courtesy Lamps Circuit Fig. 41: Instrument Illumination Circuit Cover 2005 Jeep Grand Cherokee Limited
2005 SYSTEM WIRING DIAGRAMS Jeep – Grand Cherokee
Filed Under (Jeep) by admin on 19-06-2010
Model(s): 1996-99 Chrysler (NS) Town & Country 1996-99 Chrysler (GS) Voyager 1996-98 Jeep (ZJ) Grand Cherokee 1996-98 Jeep (ZG) Grand Cherokee (International Market) The Memory Seat/Mirror Module (MSMM) (on ZJ/ZG the module is for the seat only) detects and remembers where the end of seat travel (called “soft stop”) is in each direction. A soft stop is set in MSMM memory when the position sensing feedback voltage, controlled by a potentiometer on the motor end, fails to change. The feedback voltage potentiometers vary the position sensing feedback voltage based on seat position/movement (no movement, no change in position sensing feedback voltage). The seat motor automatically stops at the soft stop on any subsequent movement so the motor does not run into a stall condition (end of travel). The soft stop limits will be updated any time the MSMM senses a mechanical stall (such as when something is stuck under or behind the seat that causes the seat to stop moving). These soft stops can prevent the seat from being able to have memory positions set over the full range of travel. Also, positions that were previously programmed to locations beyond an updated soft stop limit will not be recalled as they are “out of range.”
Filed Under (Jeep) by admin on 14-12-2010
NOTE: NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see GRAND CHEROKEE wiring diagram in WIRING DIAGRAMS article. DTC P0320: NO CRANK REFERENCE SIGNAL AT PCM is monitored during engine cranking. DTC may be stored in Powertrain Control Module (PCM) when PCM senses no Crankshaft Position (CKP) sensor signal during engine cranking, and at least 3 Camshaft Position (CMP) sensor signals have occurred. Possible causes are: defective tone wheel/flexplate, defective PCM, defective CKP sensor, defective CMP sensor, defective connectors or defective wiring. 1. Turn ignition on, with engine off. Using scan tool, read current CKP count and attempt to start engine. If current CKP count does not change while attempting to start engine, go to next step. If current CKP count changes while attempting to start engine, go to step 16). 2. Turn ignition off. Disconnect CKP sensor connector. See Fig. 26 or Fig. 27 . Clean and/or repair connector as necessary. Turn ignition on, with engine off. Using a voltmeter, check voltage on CKP sensor connector, 5-volt supply circuit (Orange wire). If voltage is more than 4.5 volts, go to next step. If voltage is 4.5 volts or less, repair open 5-volt supply circuit. Perform TEST VER-5A.
Filed Under (Jeep) by admin on 13-12-2010
Customer Concern: Tests/Procedures: Potential Causes: Intermittent no crank condition. Customer reports hearing a single click. Tried new starter. It happens intermittently. It is cranking normally right now. 1. Test the battery first. Replace as needed. Be sure to check all the cable connections. 2. Duplicate the problem and see if there is power getting to the starter on the Yellow/Grey wire in the crank position. 3. Check the voltage drop of the cables or simply use jumper cables to see if it will crank over, if it does the cable(s) are at fault. Battery Cables Connector