Page 35 of 1954

Power Window s
Description s
The driver' s windo w wil l sto p an d automaticall y ope n i f yo u pinc h you r han d o r somethin g durin g auto-u p operation .
Th e syste m is compose d o f th e powe r windo w maste r switch , th e powe r windo w contro l uni t an d th e driver' s windo w
motor.
The powe r windo w moto r incorporate s a pulse r whic h generate s pulse s durin g th e motor' s operatio n an d send s th e puls -
e s t o th e powe r windo w contro l unit . As soo n a s th e powe r windo w contro l uni t detect s n o pulse s fro m th e pulser , th e
contro l uni t make s th e powe r windo w moto r sto p an d reverse .
POWER WINDO W MASTE R
SWITC H
POWE R WINDO W MOTO R HOL
E IC UNI T MAGNE
T
POWE R WINDO W
CONTRO L UNI T
Senso r
MAGNE T
Period o f pulse s -
Perio d o f
pulse s Positio
n whe n somethin g
i s pinche d
Threshol d valu e fo r
judgmen t o f pinchin g
Resettin g th e powe r windo w uni t
Resettin g th e powe r windo w contro l uni t i s require d afte r performin g th e followin g procedures :
— disconnectin g th e battery .
— removin g No . 4 1 (2 0 A ) fuse .
— disconnectin g th e connecto r fro m th e powe r windo w contro l unit .
— removin g th e windo w regulator , glas s o r glas s ru n channel .
1. Mak e sur e th e glas s is installe d properly .
2. Tur n th e ignitio n switc h OFF .
3. Remov e th e No . 4 1 (2 0 A ) fus e in th e under-hoo d fuse/rela y box .
4 . Tur n th e ignitio n switc h O N (II ) o n fo r 2 seconds , the n tur n it OFF . Reinstal l th e NO . 4 1 (2 0 A ) fus e in th e under-hoo d
fuse/rela y box .
5 . Tur n th e ignitio n switc h O N (II) .
6 . Mak e sur e th e driver' s windo w doe s no t wor k in AUT O wit h th e ignitio n switc h O N (II) .
7 . Mov e th e driver' s windo w al l th e wa y dow n b y usin g th e driver' s switch .
8 . Mov e th e driver' s windo w al l th e wa y u p b y usin g th e driver' s switc h whe n th e windo w reache s th e top , hol d th e
driver' s windo w switc h in th e u p positio n fo r 2 seconds .
* I f th e windo w doe s no t wor k in AUTO , rese t th e powe r windo w maste r switc h accordin g to th e abov e procedure s again .
Period o f pulse s
ProCarManuals.com
Page 142 of 1954
PGM-FI System
Primary Heated Oxygen Sensor (HO2S) (Sensor 1) (cont'd)
Troubleshooting Flowchart
Is DTC P0133 and/or P0153
indicated?
NO
YES
Intermittent failure, system is OK
at this time. Check for poor con-
nections or loose terminals at
C251, C254 (located at right shock
tower), C119 (right primary H02S
(Bank 1, Sensor 1)) or C126 (left
primary H02S (Bank 2, Sensor
1))*
and
PCM.
— The MIL has been reported on.
— DTC P0133 and/or P0153
stored.
Problem verification:
1. Do the PCM Reset Procedure.
2. Start the engine. Hold the
engine at 3,000 rpm with no
load (in Park or neutral) until
the radiator fan comes on.
3. Connect the SCS service con-
nector.
4. Test-drive under following
conditions.
— 55 mph (88 km/h) steady
speed
— Transmission in posi-
tion
— Until readiness code comes
on
Replace the primary HO2S (Sen-
sor 1).ProCarManuals.com
Page 143 of 1954

The HDS or the scan tool indicates Diagnostic Trouble Code (DTC) P0134: Right Primary Heated Oxygen Sensor
(Right Primary HO2S) (Bank 1, Sensor 1) heater system malfunction.
The HDS or the scan tool indicates Diagnostic Trouble Code (DTC) P0154: Left Primary Heated Oxygen Sensor
(Left Primary H02S) (Bank 2, Sensor 1) heater system malfunction.
The MIL has been reported on.
DTC P0134 and/or P0154 are
stored.
Problem verification:
1. Do the PCM Reset Procedure.
2. Start the engine. Hold the
engine at 3,000 rpm with no
load (in Park or neutral) until
the
radiator
fan
comes
on.
Is DTC P0134 and/or P0154
indicated?
YES
Check for an open in the HO2S:
1. Turn the ignition switch OFF.
2.
Disconnect
the
right primary
H02S (Bank 1, Sensor 1) or left
primary HO2S* (Bank2, Sen-
sor 1) connector.
3. Install a jumper wire on the
harness side of the right prima-
ry H02S (Bank 1,Sensor 1) or
left primary H02S*connector
between terminals No. 1 and
No. 2.
4. Turn the ignition switch ON (II).
5. Check the right primary HO2S
(Bank 1, Sensor 1) or left pri-
mary HO2S*(Bank2, Sensorl)
output voltage with the HDS
or the scan tool.
Is there 1.5 V or more?
YES
Check for an open in the wires
(PHO2S line):
1. Turn the ignition switch OFF.
2. Install a jumper wire on the
PCM connector between D19,
orD18*andD22.
3. Turn the ignition switch ON (II).
4. Check the right primary H02S
(Bank 1, Sensor 1) or left pri-
mary H02S* (Bank 2, Sensor 1)
output voltage with the HDS
or the scan tool.
Is there 1.5 V or more?
YES
NO
Intermittent failure, system is OK
at this time. Check for poor con-
nections or loose terminals at
C251, C254 (located at right shock
tower), C119 (right primary H02S
(Bank 1, Sensor 1)) or C126 (left
primary H02S (Bank 2, Sensor 1))*
and
PCM.
Replace the HO2S.
Repair open in the wire between
PCM (019 or D18*) and right pri-
mary HO2S (Bank 1, Sensor 1) or
left primary HO2S* (Bank 2,
Sensor 1).
Substitute a known-good PCM and
recheck. If symptom/indication
goes away, replace the original
PCM.ProCarManuals.com
Page 146 of 1954

PGM-FI System
Primary Heated Oxygen Sensor (HO2S) (Sensor 1) (cont'd)
The HDS or the scan tool indicates Diagnostic Trouble Code (DTC) P2297: A high voltage problem in the Right
Primary Heated Oxygen Sensor (Right Primary HO2S) (Bank 1, Sensor 1) circuit.
The HDS or the scan tool indicates Diagnostic Trouble Code (DTC) P2298: A high voltage problem in the Left
Primary Heated Oxygen Sensor (Left Primary HO2S) (Bank 2, Sensor 1) circuit.
— The MIL has been reported on.
— DTC P2297 and/or P2298 are
stored.
Problem verification:
1. Do the PCM Reset Procedure.
2. Test-drive with the transmis-
sion in [2] position.
3. Check the right primary H02S
(Bank 1, Sensor 1) or left primary
HO2S*(Bank2, Sensor 1) out-
put voltage with the scan tool
during deceleration using com-
pletely closed throttle.
Is DTC P2297 and/or P2298
indicated?
NO
Intermittent failure, system is OK
at this time. Check for poor con-
nections or loose terminals at
C251, C254 (located at right shock
tower), C119 (right primary H02S
(Bank 1, Sensor 1)) or C126 (left
primary HO2S (Bank 2, Sensor 1))*
and
PCM.
*: P2298
Replace the HO2S.ProCarManuals.com
Page 156 of 1954
PGM-FI System
PCM Internal Circuit
The HDS or the scan tool indicates Diagnostic Trouble Code (DTC) P0607: A PCM Internal Circuit Failure.
— The MIL has been reported on.
— DTC P0607 is stored.
Problem verification:
1. Do the PCM Reset Procedure.
2. Turn the ignition switch ON (II).
3. Allow it to 3 seconds.
Is DTC P0607 indicated?
YES
Intermittent failure, system is OK
at this time.
Substitute a known-good PCM
and recheck. If symptom/indica-
tion goes away, replace the origi-
nal
PCM.
11-66ProCarManuals.com
Page 158 of 1954
PGM-FI System
Barometric Pressure (Baro) Sensor
The HDS or the scan tool indicates Diagnostic Trouble Code (DTC) P2227: A range/performance problem in the
Barometric Pressure (BARO) Sensor circuit.
Is DTC P2227 indicated?
Intermittent failure, system is OK
at this time.
YES
Substitute a known-good PCM
and recheck. If symptom/indica-
tion goes away, replace the origi-
nal
PCM.
Problem verification:
1. Do the PCM reset procedure.
2. Connect the SCS service con-
nector.
3. Start the engine. Hold the
engine at 3,000 rpm with no
load (in Park or neutral) until
the radiator fan comes on,
then let it idle.
4. Test-drive with the transmis-
sion in position.
5. Accelerate for five seconds
using wide open throttle.
— The MIL has been reported on.
— DTC P2227 is stored.ProCarManuals.com
Page 159 of 1954
The HDS or the scan tool indicates Diagnostic Trouble Code (DTC) P2228: A low voltage problem in the Baro
sensor circuit.
The HDS or the scan tool indicates Diagnostic Trouble Code (DTC) P2229: A high voltage problem in the Baro
sensor circuit.
The MIL has been reported on.
DTC P2228 or P2229 is stored.
Problem verification:
1. Do the PCM Reset Procedure.
2. Turn the ignition switch ON (II).
Is DTC P2229 indicated?
NO
Is DTC P2228 indicated?
YES
Substitute a known-good PCM
and recheck. If symptom/indica-
tion goes away, replace the origi-
nal
PCM.
Substitute a known-good PCM
and recheck. If symptom/indica-
tion goes away, replace the origi-
nal
PCM.
Intermittent failure, system is OK
at this time.ProCarManuals.com
Page 177 of 1954

Emission Control System
Exhaust Gas Recirculation (EGR) System (cont'd)
The HDS or the scan tool indicates Diagnostic Trouble Code (DTC) P0406: A high voltage problem in the
Exhaust Gas Recirculation (EGR) valve position sensor circuit.
— The MIL has been reported on.
— DTC P0406 is stored.
Problem verification:
1. Do the PCM Reset Procedure.
2. Turn the ignition switch ON (II).
Is DTC P0406 indicated?
YES
Check for an open in the EGR
valve position sensor:
1. Turn the ignition switch OFF.
2. Disconnect the EGR valve
position sensor connector.
3. Turn the ignition switch ON (II).
4. Measure voltage between the
EGR valve position sensor 3P
connector terminals No. 1 and
No. 3.
Is there about 5 V?
NO
Check for open in the wire (SG2
line):
Measure voltage between PCM
connector terminals D22 and D21.
Is there about 5 V?
NO
Substitute a known-good PCM
and recheck. If symptom/indica-
tion goes away, replace the origi-
nal
PCM.
NO
Intermittent failure, system is OK
at this time. Check for poor con-
nections or loose terminals at
C251, C254 (located at right shock
tower), C107 (EGR valve) and
PCM.
YES
Replace the EGR valve.
Repair open in the wire between
PCM (D22) and EGR valve posi-
tion sensor.
11-90ProCarManuals.com