4.3.3 ELECTRONIC PINION FACTOR
WARNING
The pinion factor must be set for all new trans-
mission control modules. If the pinion factor is not
set or if it is set incorrectly, any speed-related
accessories will not operate or will operate inaccu-
rately. This includes the speedometer, speed con-
trol, rolling door locks, and other devices that are
operated by the powertrain and body control mod-
ules. For instructions on setting the pinion factor,
see the appropriate transmission diagnostic man-
ual or the service manual.
5.0 RECOMMENDED TOOLS
AND EQUIPMENT
DRBIIIt(diagnostic readout box) scan tool
fuel pressure adapter (C-6631) or #6539
fuel pressure kit (C-4799-B) or #5069
fuel release hose (C-4799-1)
MinAir flow fitting #6457
jumper wires
ohmmeter
oscilloscope
vacuum gauge
voltmeter
12 volt test light minimum 25 ohms resistance
with probe #8382
CAUTION: A 12 VOLT TEST LIGHT SHOULD
NOT BE USED FOR THE FOLLOWING
CIRCUITS, DAMAGE TO THE POWERTRAIN
CONTROLLER WILL OCCUR.
²5 Volt Supply
²8 Volt Supply
²J1850 PCI Bus
²CCD Bus
²CKP Sensor Signal
²CMP Sensor Signal
²Vehicle Speed Sensor Signal
²O2 Sensor Signal
6.0 GLOSSARY OF TERMS
ABSantilock brake system
backfire,
popbackfuel ignites in either the intake or
the exhaust system
CKPcrank position sensor
CMPcamshaft position sensor
cuts out,
missesa steady pulsation or the inability of
the engine to maintain a consistent
rpmDLCdata link connector (previously
called ªengine diagnostic connectorº)
detona-
tion,
spark
knocka mild to severe ping, especially un-
der loaded engine conditions
ECTengine coolant temperature sensor
EGRexhaust gas recirculation valve and
system
genera-
torpreviously called ªalternatorº
hard
startThe engine takes longer than usual
to start, even though it is able to
crank normally.
hesita-
tion, sag,
stumble
There is a momentary lack of response
when the throttle is opened.
This can
occur at all vehicle speeds. If it is se-
vere enough, the engine may stall.
IATintake air temperature sensor
IACidle air control valve
JTECCombined engine and transmission
control module
lack of
power,
sluggish
The engine has less than expected
power, with little or no increase in vehi-
cle speed when the throttle is opened.
LDPLeak Detection Pump
MAPmanifold absolute pressure sensor
MILmalfunction indicator lamp
MTVmanifold tuning valve
O2Soxygen sensor
PCIProgrammable Communication In-
terface
PCMpowertrain control module
PCMpowertrain control module
PCVpositive crankcase ventilation
PEPPeripheral Expansion Port
poor fuel
economyThere is significantly less fuel mile-
age than other vehicles of the same
design and configuration
rough,
unstable,
or er-
ratic idle
stallingThe engine runs unevenly at idle
and causes the engine to shake if it
is severe enough. The engine idle
rpm may vary (called ªhuntingº).
This condition may cause stalling if
it is severe enough.
SKIMSentry Key Immobilizer Module
SKISSentry Key Immobilizer System
start and
stallThe engine starts but immediately
dies.
13
GENERAL INFORMATION
ProCarManuals.com
POWERTRAIN CONTROL MODULE C1 - BLACK 40 WAYCAV CIRCUIT FUNCTION
1- -
2 K18 18RD/YL IGNITION COIL NO. 3 DRIVER
3 K17 18DB/TN IGNITION COIL NO. 2 DRIVER
4- -
5 V32 18YL/RD SPEED CONTROL ON/OFF SWITCH SENSE
6 A142 18DG/OR AUTOMATIC SHUT DOWN RELAY OUTPUT
7 K13 18YL/WT FUEL INJECTOR NO. 3 DRIVER
8 K20 18DG GENERATOR FIELD DRIVER (+)
9- -
10 Z12 18BK/TN GROUND
11 K19 18GY/RD IGNITION COIL NO. 1 DRIVER
12 - -
13 K11 18WT/DB FUEL INJECTOR NO. 1 DRIVER
14 K58 18BR/DB FUEL INJECTOR NO. 6 DRIVER
15 K38 18GY FUEL INJECTOR NO. 5 DRIVER
16 K14 18LB/BR FUEL INJECTOR NO. 4 DRIVER
17 K12 18TN/WT FUEL INJECTOR NO. 2 DRIVER
18 - -
19 - -
20 F87 18WT/BK FUSED IGNITION SWITCH OUTPUT (ST-RUN)
21 - -
22 G3 18BK/PK SERVICE ENGINE SOON INDICATOR DRIVER
23 - -
24 - -
25 K42 18DB/LG KNOCK SENSOR SIGNAL
26 K2 18TN/BK ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
27 K127 18BK/OR OXYGEN SENSOR GROUND
28 - -
29 - -
30 K41 18BK/DG OXYGEN SENSOR 1/1 SIGNAL
31 K90 18TN (EXCEPT 3.0L) SMART START RELAY CONTROL
32 K24 18GY/BK CRANKSHAFT POSITION SENSOR SIGNAL
33 K44 18TN/YL CAMSHAFT POSITION SENSOR SIGNAL
34 - -
35 K22 18OR/DB THROTTLE POSITION SENSOR SIGNAL
36 K1 18DG/RD MANIFOLD ABSOLUTE PRESSURE SENSOR SIGNAL
37 K21 18BK/RD (2.4L) INTAKE AIR TEMPERATURE SIGNAL
38 C103 18DG/LB (EXCEPT
3.0L)A/C SWITCH SIGNAL
39 - -
40 K35 18GY/YL EGR SOLENOID CONTROL
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CONNECTOR PINOUTS
ProCarManuals.com
