2007 > 2.7L V6 GASOLINE >
TROUBLE SHOOTING
IGNITION SYSTEM
Symptom Suspect area Remedy
Engine will not start or
is hard to start
(Cranks OK) Ignition lock switch
Inspect ignition lock switch, or replace as required
Ignition coil Inspect ignition coil, or replace as required
Spark plugs Inspect spark plugs, or replace as required
Ignition wiring disconnected or broken Repair wiring, or replace as required
Rough idle or stalls Ignition wiring Repair wiring, or replace as required
Ignition coil Inspect ignition coil, or replace as required
Engine hesitates/poor
acceleration Spark plugs and spark plug cables
Inspect spark plugs / cable, or replace as required
Ignition wiring Repair wiring, or replace as required
Poor mileage Spark plugs and spark plug cables Inspect spark plugs / cable, or replace as required
CHARGING SYSTEM Symptom Suspect area Remedy
Charging warning
indicator does not
light with ignition
switch "ON" and
engine off. Fuse blown
Check fuses
Light burned out Replace light
Wiring connection loose Tighten loose connection
Electronic voltage regulator Replace voltage regulator
Charging warning
indicator does not go
out with engine
running. (Battery
requires frequent
recharging) Drive belt loose or worn
Adjust belt tension or replace belt
Battery cable loose, corroded or worn Inspect cable connection, repair or replace
cable
Electronic voltage regulator or alternator Replace voltage regulator or alternator
Wiring Repair or replace wiring
Overcharge Electronic voltage regulator Replace voltage regulator
Voltage sensing wire Repair or replace wiring
Discharge Drive belt loose or worn Adjust belt tension or replace belt
Wiring connection loose or short circuit Inspect wiring connection, repair or replace
wiring
Electronic voltage regulator or alternator Replace voltage regulator or alternator
Poor grounding Inspect ground or repair
Worn battery Replace battery
STARTING SYSTEM Symptom Suspect area Remedy
Engine will not crank Battery charge low Charge or replace battery
Battery cables loose, corroded or
worn out Repair or replace cables
Transaxle range switch (Vehicle with
automatic transaxle only) Refer to TR group - automatic transaxle
2007 > 2.7L V6 GASOLINE >
ON-VEHICLE INPECTION
a.Check that the battery cables are connected to the correct terminals.
b. Disconnect the battery cables when the battery is given a quick charge.
c. Never disconnect the battery while the engine is running.
CHECK BATTERY VOLTAGE
1.If 20 minutes have not passed since the engine was stopped, turn the ignition switch ON and turn on the electrical
system (headlamp, blower motor, rear defogger etc.) for 60 seconds to remove the surface charge.
2. Turn the ignition switch OFF and turn off the electrical systems.
3. Measure the battery voltage between the negative ( - ) and positive (+) terminals of the battery.
Standard voltage : 12.5 ~ 12.9V at 20°C(68°F)
If the voltage is less than specification, charge the battery.
CHECK THE BATTERY TERMINALS AND FUSES
1.Check that the battery terminals are not loose or corroded.
2. Check the fuses for continuity.
INSPECT DRIVE BELT
Visually check the belt for excessive wear, frayed cords etc.
If any defect has been found, replace the drive belt.
Cracks on the rib side of a belt are considered acceptable. If the belt has chunks missing from the ribs, it should
be replaced.
VISUALLY CHECK ALTERNATOR WIRING AND LISTEN FOR ABNORMAL NOISES
1.Check that the wiring is in good condition.
2. Check that there is no abnormal noise from the alternator while the engine is running.
CHECK DISCHARGE WARNING LIGHT CIRCUIT
1.Warm up the engine and then turn it off.
2. Turn off all accessories.
3. Turn the ignition switch "ON". Check that the discharge warning light is lit.
4. Start the engine. Check that the light is lit.
If the light does not go off as specified, troubleshoot the discharge light circuit.
INSPECT CHARGING SYSTEM
VOLTAGE DROP TEST OF ALTERNATOR OUTPUT WIRE
This test determines whether or not the wiring between the alternator "B" terminal and the battery (+) terminal is good
by the voltage drop method.
PREPARATION
2007 > 2.7L V6 GASOLINE >
GENERAL TROUBLESHOOTING INFORMATION
BEFORE TROUBLESHOOTING
1. Check applicable fuses in the appropriate fuse/relay box.
2. Check the battery for damage, state of charge, and clean and tight connections.
a.Do not quick- charge a battery unless the battery ground cable has been disconnected, otherwise you will
damage the generator diodes.
b. Do not attempt to crank the engine with the battery ground cable loosely connected or you will severely
damage the wiring.
3. Check the generator belt tension.
HANDLING CONNECTORS
1.Make sure the connectors are clean and have no loose wire terminals.
2. Make sure multiple cavity connectors are packed with grease (except watertight connectors).
3. All connectors have push - down release type locks (A).
4.Some connectors have a clip on their side used to attach them to a mount bracket on the body or on another
component. This clip has a pull type lock.
5. Some mounted connectors cannot be disconnected unless you first release the lock and remove the connector from
its mount bracket (A).
6.Never try to disconnect connectors by pulling on their wires; pull on the connector halves instead.
7. Always reinstall plastic covers.
Fuses and Relays
2007 > 2.7L V6 GASOLINE >
INSPECTION
FUSE
1. Be sure there is no play in the fuse holders, and that the fuses are held securely.
2. Are the fuse capacities for each circuit correct?
3. Are there any blown fuses ?
If a fuse is to be replaced, be sure to use a new fuse of the same capacity. Always determine why the fuse blew
first and completely eliminate the problem before installing a new fuse.
RELAY
1.Be sure that the relays are held the each module securely.
2. Are the relay types for each circuit correct?
2007 > 2.7L V6 GASOLINE >
INSPECTION
FUSE
1. Be sure there is no play in the fuse holders, and that the fuses are held securely.
2. Are the fuse capacities for each circuit correct?
3. Are there any blown fuses ?
If a fuse is to be replaced, be sure to use a new fuse of the same capacity. Always determine why the fuse blew
first and completely eliminate the problem before installing a new fuse.
RELAY
1.Be sure that the relays are held the each module securely.
2. Are the relay types for each circuit correct?
3.If system of some relay is not operate accurately, replace with a new one and check the system.
REPLACEMENT
IPM (INSTRUMENT PANEL MODULE)
1. Disconnect the negative ( - ) battery terminal.
2. Remove the crash pad lower panel (A). (Refer to the Body group - Crash pad).
2007 > 2.7L V6 GASOLINE >
TROUBLESHOOTING
Check the following items prior to performing Power Sliding Door System service.
1. Manual movement
Make sure the sliding door moves manually. Place the ON/OFF switch on the overhead console in the OFF
position. Move the door manually and check for proper door fit and latch effort. Check for interference with other
body parts such as latch striker, trim, and weather seals.
2. Battery voltage
Make sure the battery is fully charged. The PSD system is an electronic device and requires a minimum battery
voltage to operate. The PSDM(Power sliding door module) monitors the battery voltage present at the PSDM input
battery input and will not permit operation if the battery voltage is out of range.
3. Fuses
Two fuses protect the battery supply to the PSDM(Power sliding door module), one for Power, and one for logic.
Check that the fuses are intact
4. Repeat Operations
Make sure the customer has not been operating the PSD repeatedly while the vehicle is turned off. The battery will
be discharged and the PSDM(Power sliding door module) will not permit operation.
5. Vehicle on Steep Grade
Make sure the customer has not been operating the PSD system when the vehicle is parked on a steep grade
(greater than 30%). The system will operate but the force of gravity and normal flex of the vehicle body may affect
proper operation.
6. Obstacle Detection
The obstacle detection force is not adjustable. Factors that may affect the force are vehicle grade, battery voltage,
or dirt in sliding door tracks.
7. Outside handle response time
When the vehicle has been parked and OFF, there may be a delay before power operation starts after the outside
handle is pulled. This is normal because the PSDM(Power sliding door module) must wake up and check for proper
conditions before starting a power open operation.
8. The sliding doors are not identical. Open and close times and obstacle detection efforts may vary when comparing
the two doors. This is normal and is caused by vehicle build conditions such as door fit and rolling resistance.
9. Scan tool Diagnostic tool
Connect Scan tool to the K- line and check status of system.
POWER SLIDING DOOR SYSTEM DIAGNOSIS
CONDITION POSSIBLE CAUSES CORRECTION
Sliding Door opens
unexpectedly Accidental activation or failure of
open/close command switch
Check for shorted or defective switch
Failure of latch assembly Check wiring connections
Check for diagnostic trouble codes
Failure of Power Sliding Door or Body
Control module Disconnect then reconnect battery or fuse to
reset module and function sliding door. If no
function exists check for loose wire
connections. See Body Diagnostic Manual for
detailed procedures
Sliding Door will not power
open or close Not in Park or false indication
Check switch status with SCAN tool
Battery voltage at PSDM is too low
<9.5V to start operation and
<8.0V to continue operation Check for proper voltage at the PSDM.
Charge battery
Blown fuse Check for blown fuse
BCM or sliding door control module