
COMBINATION FLASHER INPUT L55 20BK/YL
A1
FUNCTION CIRCUIT CAVITYCOMBINATION FLASHER (A) (RHD)
A2L32 20PK COMBINATION FLASHER OUTPUT
GROUND Z2 20BK/LG
A320 18 102
19 17 *16 15 141311
12 (RHD)9 (LHD) 8 (LHD)7
6 5 (RHD)3 1 (LHD)
FUSED CIRCUIT FEED CIRCUIT AMPS FUSE NO.FUSES
G5 20DB/WT
- -- - 10A 15A
15A
L44 20VT/RD L43 20VT 10AX12 18RD/WT 10A 20A F13 18DB
20A F10 18YL/RD-- 5A
F15 18DB/WT 10A 10A F15 18DB/WT
F12 20DG/WT F20 20WT 10AC1 14DG 25A 10A L5 20BK
10A F20 20WT 20A F35 16RD/YLF33 20PK/RD F30 16RD 15A A3 12RD/WT
A3 12RD/WT
A3 12RD/WT
A22 12BK/OR
A22 12BK/OR
A22 12BK/OR
A22 12BK/OR
A21 14DB
A21 14DB
A21 14DB
A31 14BK/WT
A31 14BK/WT
A31 14BK/WT
L4 14VT/WT
L4 14VT/WTG5 20DB/WT ***
F30 18RD
4 **A3 12RD/WT 10A
5 (LHD)10A 1 (RHD)15A A3 12RD/WT
A22 12BK/OR F25 18TN/LG
8 (RHD)10A A22 12BK/OR F25 18TN/LG
9 (RHD)4A E1 20TN E2 20ORA21 14DB
12 (LHD)E1 20TN E2 20OR 4A
L43 20VT
A5 A3M2 20YL
A2
TIME OUT RELAY (A) (LHD)
FUNCTION CIRCUIT CAVITY
M2 20YL
M1 20PK
M23 20YL/BKTIME OUT RELAY OUTPUT
TIME OUT RELAY OUTPUT
FUSED B(+)
TIME OUT RELAY INPUT
- - A3 12RD/WT
4 *F61 20WT/OR
17 **10A L4 14VT/WT L43 18VT
* BUILT-UP-EXPORT
** EXCEPT BUILT-UP-EXPORT -
-
-
*** WITHOUT RKE
PL8W-11 FUSE/FUSE BLOCK 8W - 11 - 5
8211J988W-1

BK/YL20 L7
CIGAR
LIGHTER/
POWER
OUTLET
1
RD16 F30
B2
12
1FUSE15A
21
BATT A3
F30
18
RD
2FUSE15A
22
F33
20
PK/RD
HEADLAMP
SWITCH
4
7C230
L7
20
BK/YL
4
RADIO
12
L7
20
BK/YLL7
20
BK/YL
L7
20
BK/YL
L7
18
BK/YL
2
LAMP STOP
TAIL/
RIGHT
22
LEFT
TAIL/
STOP
LAMP
L7
18
BK/YLL7
20
BK/YL
S306
L7
20
BK/YL
1
9
29
4A
FUSE
9
E1
20
TN
9
2
1 0
FUSE
BLOCK
A
(8W-11-10)TO
C105 C2
SWITCH LAMP
FOG
FRONT
L7
20
BK/YL
B5
RIGHT
LICENSE
LAMP LAMP LICENSE
LEFT (IN FB) RELAY
LIGHTER
CIGAR
2C340C3412
BLOCK
FUSES218
0 OFF
1 PARK
2 HEAD
(8W-41-5)(8W-10-8)
(8W-50-4)
(8W-50-11)
(8W-47-3)
(8W-50-13)(8W-51-8) (8W-51-8) (8W-41-5)
(8W-51-8) (8W-51-8) (8W-11-4)
(8W-11-4)
(8W-11-19)
PL8W-11 FUSE/FUSE BLOCK
RHD BUILT-UP-EXPORT8W - 11 - 9
8215J988W-1

below the minimum acceptable percentage, the PCM
stores a diagnostic trouble code in memory.
During certain idle conditions, the PCM may enter
a variable idle speed strategy. During variable idle
speed strategy the PCM adjusts engine speed based
on the following inputs.
²A/C sense
²Battery voltage
²Battery temperature
²Engine coolant temperature
²Engine run time
²Power steering pressure switch
²Vehicle mileage
ACCELERATION MODE
This is a CLOSED LOOP mode. The PCM recog-
nizes an abrupt increase in Throttle Position sensor
output voltage or MAP sensor output voltage as a
demand for increased engine output and vehicle
acceleration. The PCM increases injector pulse width
in response to increased fuel demand.
DECELERATION MODE
This is a CLOSED LOOP mode. During decelera-
tion the following inputs are received by the PCM:
²A/C pressure transducer
²A/C sense
²Battery voltage
²Intake air temperature
²Engine coolant temperature
²Crankshaft position (engine speed)
²Exhaust gas oxygen content (upstream heated
oxygen sensor)
²Knock sensor
²Manifold absolute pressure
²Power steering pressure switch
²Throttle position
²IAC motor control changes in respones to MAP
sensor feedback
The PCM may receive a closed throttle input from
the Throttle Position Sensor (TPS) when it senses an
abrupt decrease in manifold pressure. This indicates
a hard deceleration. In response, the PCM may
momentarily turn off the injectors. This helps
improve fuel economy, emissions and engine braking.
If decel fuel shutoff is detected, downstream oxy-
gen sensor diagnostics is performed.
WIDE-OPEN-THROTTLE MODE
This is an OPEN LOOP mode. During wide-open-
throttle operation, the following inputs are received
by the PCM:
²Intake air temperature
²Engine coolant temperature
²Engine speed
²Knock sensor
²Manifold absolute pressure²Throttle position
When the PCM senses a wide-open-throttle condi-
tion through the Throttle Position Sensor (TPS) it de-
energizes the A/C compressor clutch relay. This
disables the air conditioning system.
The PCM does not monitor the heated oxygen sen-
sor inputs during wide-open-throttle operation except
for downstream heated oxygen sensor and both
shorted diagnostics. The PCM adjusts injector pulse
width to supply a predetermined amount of addi-
tional fuel.
IGNITION SWITCH OFF MODE
When the operator turns the ignition switch to the
OFF position, the following occurs:
²All outputs are turned off, unless 02 Heater
Monitor test is being run. Refer to Group 25,
On-Board Diagnostics.
²No inputs are monitored except for the heated
oxygen sensors. The PCM monitors the heating ele-
ments in the oxygen sensors and then shuts down.
DESCRIPTION AND OPERATION
SYSTEM DIAGNOSIS
The PCM can test many of its own input and out-
put circuits. If the PCM senses a fault in a major
system, the PCM stores a Diagnostic Trouble Code
(DTC) in memory.
For DTC information, refer to Group 25, Emission
Control Systems. See On-Board Diagnostics.
POWER DISTRIBUTION CENTER
The power distribution center (PDC) is located next
to the battery (Fig. 1). The PDC contains the starter
relay, radiator fan relay, A/C compressor clutch relay,
auto shutdown relay, fuel pump relay and several
fuses.
Fig. 1 Power Distribution Center (PDC)
PLFUEL SYSTEM 14 - 23
GENERAL INFORMATION (Continued)

(3) Open the Power Distribution Center (PDC).
Check for blown fuses. Ensure the relays and fuses
are fully seated in the PDC (Fig. 32). A label on the
underside of the PDC cover shows the locations of
each relay and fuse.
(4) Verify the throttle cable operates freely (Fig.
33).
(5) Check the electrical connections at the idle air
control motor and throttle position sensor (Fig. 34).
(6) Check hose connections between the PCV
valve, vacuum port - intake manifold and the oil sep-
arator (Fig. 35).
(7) Inspect the electrical connections at the MAP
sensor/intake air temperature sensor and the (Fig.
36).
(8) Inspect the fuel injector electrical connections
(Fig. 37).
(9) Inspect the ignition coil electrical connector.
Ensure the spark plug insulators are firmly seated
over the spark plugs (Fig. 38).
Fig. 30 2.0L SOHC Engine Compartment
Fig. 31 Battery, PCM, and PDC
Fig. 32 Power Distribution Center
Fig. 33 Throttle CableÐAutomatic Transmission
Fig. 34 Idle Air Control Motor and Throttle Position
SensorÐTypical
14 - 36 FUEL SYSTEMPL
DIAGNOSIS AND TESTING (Continued)

(3) Open the Power Distribution Center (PDC).
Check for blown fuses. Ensure the relays and fuses
are fully seated in the PDC (Fig. 55). A label on the
underside of the PDC cover shows the locations of
each relay and fuse.
(4) Verify the throttle cable operates freely (Fig.
56).(5) Check the electrical connections at the idle air
control motor and throttle position sensor (Fig. 57).
Fig. 54 Battery, PCM, and PDC
Fig. 55 Power Distribution Center
Fig. 56 Throttle CableÐAutomatic Transmission
Fig. 57 Idle Air Control Motor and Throttle Position
SensorÐTypical
PLFUEL SYSTEM 14 - 41
DIAGNOSIS AND TESTING (Continued)

SUNROOF
INDEX
page page
DIAGNOSIS AND TESTING
DIAGNOSTIC PROCEDURES............... 47
SUNROOF DIAGNOSIS................... 47
REMOVAL AND INSTALLATION
SUNROOF CABLES...................... 48
SUNROOF COMPONENTS................ 49
SUNROOF DRIVE MOTOR................. 49
SUNROOF GLASS PANEL................. 49SUNROOF GUIDE AND MECHANISM
ASSEMBLY........................... 49
SUNROOF MODULE..................... 50
SUNROOF PROCEDURE INFORMATION...... 48
SUNROOF SUNSHADE................... 50
SUNROOF WIND DEFLECTOR............. 51
ADJUSTMENTS
SUNROOF GLASS HEIGHT ADJUSTMENT.... 51
DIAGNOSIS AND TESTING
DIAGNOSTIC PROCEDURES
Before beginning sunroof diagnostics verify that all
other power accessories are in proper operating con-
dition. If not, a common electrical problem may exist.
Refer to the Wiring Diagrams section of this publica-tion for circuit, splice and component descriptions.
Check the condition of the circuit protection (fuses,
circuit breakers or fuse links). Inspect all wiring con-
nector pins for proper engagement and continuity.
Check for battery voltage at the power sunroof con-
trol switches. If battery voltage is detected at the
control switches, proceed with the following tests.
SUNROOF DIAGNOSIS
SYMPTOM POSSIBLE CAUSE
Sunroof motor inoperative.²Contaminated or corroded slides and channels.
²Binding cable or linkage.
²Faulty circuit ground.
²Faulty power circuit to sunroof drive motor.
²Faulty sunroof drive motor.
²Faulty sunroof motor connector.
Audible whine when switch is depressed,
sunroof does not operate.²Faulty motor drive clutch.
²Binding linkage.
²Faulty sunroof motor connections.
Sunroof opens, but does not close.²Binding linkage.
²Faulty circuit.
²Faulty switch.
Sunroof vents, but does not open.²Binding linkage.
²Faulty circuit.
²Faulty switch.
Sunroof does not vent²Binding cable.
²Faulty circuit.
²Faulty switch.
Sunroof vents and opens but does not
close²Binding linkage.
²Faulty circuit.
²Faulty switch.
Sunroof water leak.²Drain tubes clogged or kinked.
²Glass panel improperly adjusted.
²Faulty glass panel seal.
PLBODY 23 - 47

(3) Close all doors, windows and vents to the pas-
senger compartment.
(4) Set Heater-A/C control to A/C, full heat, floor,
RECIRC. and high blower.
(5) Start the engine and hold the idle speed (1000
rpm). After the engine has reached running temper-
ature, allow the passenger compartment to heat up.
This will create the need for maximum refrigerant
flow into the evaporator.
(6) If the refrigerant charge is sufficient, discharge
(high pressure) gauge should read 965 to 2620 kPa
(140 to 380 psi). Suction (low pressure) gauge should
read 103 to 2417 kPa (15 to 35 psi). If system cannot
achieve proper pressure readings, replace the expan-
sion valve. If pressure is correct, proceed with test.
WARNING: PROTECT SKIN AND EYES FROM CON-
TACTING CO2 PERSONAL INJURY CAN RESULT.
(7) If suction side low pressure is within specified
range, freeze the expansion valve control head (Fig.
10) for 30 seconds. Use a super cold substance (liquid
CO2).Do not spray refrigerant on the expansion
valve for this test.Suction side low pressure should
drop to 34.5 kPa (5 psi) If not, replace expansion
valve.
(8) Allow expansion valve to thaw. The low pres-
sure gauge reading should stabilize at 103 to 241
kPa (15 to 35 psi). If not, replace expansion valve.
(9) When expansion valve test is complete, test
A/C overall performance. Refer to the Heater and A/C
Performance Test in this section. Remove all test
equipment before returning vehicle to use.
BLOWER MOTOR ELECTRICAL DIAGNOSIS
Refer to the Blower Motor Electrical System Diag-
nosis chart in this section. Also refer to Group 8W,
Wiring Diagrams for more information.
BLOWER MOTOR VIBRATION AND/OR NOISE
DIAGNOSIS
The resistor block supplies the blower motor with
varied voltage (low and middle speeds) or battery
voltage (high speed).
CAUTION: Stay clear of the blower motor and resis-
tor block (Hot). Do not operate the blower motor
with the resistor block removed from the heater-A/C
housing.
Refer to the Blower Motor Vibration/Noise chart
for diagnosis.
EVAPORATOR PROBE TEST
The work area and vehicle must be between 16É C
(60É F) and 32É C (90É F) when testing the switch.(1) Disconnect the three wire connector from the
evaporator probe lead located behind the glove box.
(2) Start engine and set A/C to low blower motor
speed, panel, full cool, and RECIRC.
(3) Using a voltmeter, check for battery voltage
between Pin 1 and 2. If no voltage is detected, there
is no power to the switch. Check wiring and fuses.
Refer to Group 8W, Wiring Diagrams for circuit diag-
nosis.
(4) Using a voltmeter, check for battery voltage
between Pin 1 and Pin 3. If no voltage is detected,
there is no voltage from the Powertrain Control Mod-
ule. Refer to Group 8W, Wiring Diagrams. If voltage
is OK, connect a jumper wire between Pin 1 and Pin
3. The compressor clutch should engage. If the clutch
engages, remove the jumper wire immediately and go
to Step 5. If the compressor clutch does not engage,
check the operation of the clutch and repair as nec-
essary.
(5) If compressor clutch engages, connect the evap-
orator probe 3-way connector. The compressor clutch
should engage or cycle depending on evaporator tem-
perature. If OK, go to Step 6. If not OK, replace the
clutch cycling switch.
(6) The engine running and the A/C set to:
²Blower motor on low speed
²Panel position
²Full cool
²RECIRC.
Close all doors and windows. Place a thermometer
in the center discharge vent.
(7) If the clutch does not begin to cycle off between
2É C to 7É C (35É F to 45É F), verify that the evapo-
rator probe is fully installed and not loose in evapo-
rator. If it is not properly installed, install probe and
retest outlet temperature. If the evaporator probe is
properly installed, replace the clutch cycling switch.
HEATER PERFORMANCE TEST
PRE-DIAGNOSTIC PREPARATIONS
Review Safety Precautions and Warnings in this
group before performing the following procedures.
Check the coolant level, drive belt tension, vacuum
line connections, radiator air flow and fan operation.
Start engine and allow to warm up to normal tem-
perature.
WARNING: DO NOT REMOVE RADIATOR CAP
WHEN ENGINE IS HOT, PERSONAL INJURY CAN
RESULT.
If vehicle has been run recently, wait 15 minutes
before removing cap. Place a rag over the cap and
turn it to the first safety stop. Allow pressure to
escape through the overflow tube. When the system
stabilizes, remove the cap completely.
24 - 8 HEATING AND AIR CONDITIONINGPL
DIAGNOSIS AND TESTING (Continued)