1999 DODGE RAM immobilizer

6) Disconnect PNP switch harness connector. Measure
resistance of PNP switch sense circuit between Black PCM harness
connector C1 and PNP switch harness connector. If resistance is less
than 5 ohms, replace PNP switch. If resistance is not as specified,
repair open in PNP switch sense circuit.
7) Conditions required to set DTC P1899 are not present at
this time. Using scan tool, check and record FREEZE FRAME data. Ensure
"CAUSED BY DTC" "P" code matches code on DTC screen. Using wiring
diagram as a guide, inspect wiring and connectors. Repair wiring
harness as necessary. If wiring and connectors are okay, does not
reset, see INACTIVE DTC CONDITION under SELF-DIAGNOSTIC SYSTEM.
Testing is complete.
TEST VER-2A (EXCEPT DIESEL)
NOTE: If Powertrain Control Module (PCM) is replaced, correct
vehicle mileage and Vehicle Identification Number (VIN) must
be programmed into PCM to prevent Diagnostic Trouble Codes
(DTCs) from being set in Anti-Lock Brake System (ABS) modul\
e
and Supplemental Restraint System (SRS) module. To program
PCM and clear DTCs from ABS and SRS modules, proceed to
appropriate procedure listed below. On models equipped with a
Smart Key Immobilizer Module (SKIM), if replacing Powertrain
Control Module (PCM), secret key data must also be updated to\
enable engine starting. To update secret key data, proceed to
appropriate procedure listed below.
Procedure For Programming PCM & Clearing DTCs From ABS & SRS
Modules
Connect scan tool to Data Link Connector (DLC). Using scan
tool, enter correct VIN and mileage into PCM. Using scan tool
manufacturer's instructions, clear DTCs from ABS and SRS modules. Go
to step 1)).
Procedure For Updating Secret Key Data
Connect scan tool to Data Link Connector (DLC). Go to ENGINE
and then MISC menus on scan tool. Place SKIM in SECURED ACCESS MODE by
using appropriate Personal Identification Number (PIN) for this
vehicle. PIN may be obtained from owner, vehicle's invoice, or from
manufacturer. Select UPDATE THE SECRET KEY DATA. Data will be
transferred from Smart Key Immobilizer Module (SKIM) to PCM. Go to
step 1)).
1) Inspect vehicle to ensure all engine components are
connected. Reassemble and reconnect components as necessary. If test
is being performed after performing a NO TROUBLE CODE (NTC) test, go
to next step. If test is being performed after performing an OBD-II
TROUBLE CODE test, perform TEST VER-5A. If test is being performed
after any other TROUBLE CODE test, go to step 3).
2) Check if initial symptom still exists. If initial or
another symptom exists, repair is not complete. Check for Technical
Service Bulletins (TSBs) that apply to symptom and see appropriate
TEST NTC-1A: NO TROUBLE CODE TEST MENU in ENGINE PERFORMANCE, or
appropriate TROUBLE SHOOTING - NO CODES article in ENGINE PERFORMANCE
for diagnosis by symptom. If initial symptom no longer exists, test is
complete. Go to step 8).
3) If any DTCs have not been diagnosed, perform appropriate
test(s) see appropriate SELF-DIAGNOSTIC TESTS in ENGINE PERFORMANCE.
If all DTCs have been diagnosed and repaired, go to next step.
4) If Powertrain Control Module (PCM) has not been replaced,\
use scan tool to clear DTCs from PCM. Using scan tool, reset all
values in adaptive memory. To ensure no other DTCs remain, go to next
step.

5) If PCM has not been replaced, and TEST VER-2A is being
performed after an A/C relay control circuit DTC test, ensure A/C is
on and go to next step.
6) Road test vehicle for at least 5 minutes. Road test
vehicle at a speed of at least 40 MPH at some point during road test.
Stop vehicle. Turn engine off for at least 10 seconds. Start engine
and continue road test. Ensure transmission shifts through all gears.
After road test, turn engine off and go to next step.
7) Using scan tool, read DTCs. If any DTC returns, perform
appropriate test(s). If no DTCs return, test is complete. Go to next
step.
8) Turn ignition on, with engine off. Using scan tool, erase
DTCs. Turn ignition off. Disconnect scan tool. Test is complete.
TEST VER-2A (DIESEL)
NOTE: If Accelerator Pedal Position Sensor (APPS), battery, Engine
Control Module (ECM) or Powertrain Control Module (PCM) has\
been disconnected or replaced, APPS must be reprogrammed and
correct vehicle mileage and Vehicle Identification Number
(VIN) must be programmed into PCM to prevent Diagnostic
Trouble Codes (DTCs) from being set in Anti-Lock Brake System\
(ABS) module and Supplemental Restraint System (SRS) module\
.
To program PCM and clear DTCs from ABS and SRS modules,
proceed to appropriate procedure listed below. On models
equipped with a Smart Key Immobilizer Module (SKIM), if
replacing Powertrain Control Module (PCM), secret key data
must also be updated to enable engine starting. To update
secret key data, proceed to appropriate procedure listed
below.
CAUTION: DO NOT attempt to adjust screws or disassemble APPS. Settings
are preset at factory and are not intended to by changed.
Procedure For Programming APPS
Reassemble all components. Turn ignition switch to ON or RUN
position without starting engine. Slowly press accelerator pedal to
floor once and slowly release. This procedure programs APPS
calibration in ECM. Go to step 1)).
Procedure For Programming PCM & Clearing DTCs From ABS & SRS
Modules
Connect scan tool to Data Link Connector (DLC). Using scan
tool, enter correct VIN and mileage into PCM. Using scan tool
manufacturer's instructions, clear DTCs from ABS and SRS modules. Go
to step 1)).
Procedure For Updating Secret Key Data
Connect scan tool to Data Link Connector (DLC). Go to ENGINE
and then MISC menus on scan tool. Place SKIM in SECURED ACCESS MODE by
using appropriate Personal Identification Number (PIN) for this
vehicle. PIN may be obtained from owner, vehicle's invoice, or from
manufacturer. Select UPDATE THE SECRET KEY DATA. Data will be
transferred from Smart Key Immobilizer Module (SKIM) to PCM. Go to
step 1)).
1) If PCM has not been replaced, and TEST VER-2A (DIESEL) is\
being performed after a No Trouble Code (NTC) test, inspect vehicle to\
ensure all engine components are connected. Reassemble and reconnect
components as necessary. Check if initial symptom still exists. If
initial symptom exists, check for Technical Service Bulletins (TSBs)
that apply to vehicle and see TEST NTC-1A: NO TROUBLE CODE TEST MENU
in ENGINE PERFORMANCE, or appropriate TROUBLE SHOOTING - NO CODES

article in ENGINE PERFORMANCE for diagnosis by symptom. If initial
symptom no longer exists, test is complete. Go to step 6).
2) If PCM has not been replaced, and TEST VER-2A (DIESEL) is\
being performed after a DTC test, inspect vehicle to ensure all engine
components are connected. Reassemble and reconnect components as
necessary. Using scan tool, erase DTCs, reset all memory values and go
to step 4).
3) If PCM has not been replaced, and TEST VER-2A (DIESEL) is\
being performed after an A/C relay control circuit DTC test, ensure
A/C is on and go to next step.
4) Road test vehicle for at least 5 minutes. Road test
vehicle at a speed of at least 40 MPH at some point during road test.
Stop vehicle. Turn engine off for at least 10 seconds. Start engine
and continue road test. Ensure transmission shifts through all gears.
After road test, turn engine off and go to next step.
5) Using scan tool, read DTCs. If any DTC returns, perform
appropriate test(s). If no DTCs return, test is complete. Go to next
step.
6) Turn ignition on, with engine off. Using scan tool, erase
DTCs. Turn ignition off. Disconnect scan tool. Test is complete.
TEST VER-5A (EXCEPT DIESEL)
NOTE: If Powertrain Control Module (PCM) is replaced, correct
vehicle mileage and Vehicle Identification Number (VIN) must
be programmed into PCM to prevent Diagnostic Trouble Codes
(DTCs) from being set in Anti-Lock Brake System (ABS) modul\
e
and Supplemental Restraint System (SRS) module. To program
PCM and clear DTCs from ABS and SRS modules, proceed to
appropriate procedure listed below. On models equipped with a
Smart Key Immobilizer Module (SKIM), if replacing Powertrain
Control Module (PCM), secret key data must also be updated to\
enable engine starting. To update secret key data, proceed to
appropriate procedure listed below.
Procedure For Programming PCM & Clearing DTCs From ABS & SRS
Modules
Connect scan tool to Data Link Connector (DLC). Using scan
tool, enter correct VIN and mileage into PCM. Using scan tool
manufacturer's instructions, clear DTCs from ABS and SRS modules. Go
to step 1)).
Procedure For Updating Secret Key Data
Connect scan tool to Data Link Connector (DLC). Go to ENGINE
and then MISC menus on scan tool. Place SKIM in SECURED ACCESS MODE by
using appropriate Personal Identification Number (PIN) for this
vehicle. PIN may be obtained from owner, vehicle's invoice, or from
manufacturer. Select UPDATE THE SECRET KEY DATA. Data will be
transferred from Smart Key Immobilizer Module (SKIM) to PCM. Go to
step 1)).
1) Inspect vehicle to ensure all engine components are
connected. Reassemble and reconnect components as necessary. If any
DTCs have not been diagnosed, return to appropriate test(s). If all
DTCs have been diagnosed and repaired, go to next step.
2) Connect scan tool to Data Link Connector (DLC) if not
previously done. Ensure fuel tank is at least 1/4 full. Ensure A/C is
off. Go to next step.
3) Proper way to ensure DTC is repaired is to allow
Powertrain Control Module (PCM) to run monitor. Monitor operation may
be observed on scan tool. All specified enabling conditions for
specified DTC must be met before PCM will operate monitor. Go to next
step.

4) Using scan tool, monitor pretest enabling conditions until
all conditions have been met. Once all enabling conditions are met,
observe appropriate monitor for DTC on scan tool. If repaired DTC has
reset or is seen on monitor while on road test, repair is not
complete. Check for related Technical Service Bulletins (TSBs) and
return to appropriate test. If no DTCs return, test is complete. Go to
step 6).
5) If another DTC exists, return to appropriate test(s). If
no DTCs return, test is complete. Go to next step.
6) Turn ignition on, with engine off. Using scan tool, erase
DTCs. Turn ignition off. Disconnect scan tool. Test is complete.
TEST VER-5A (DIESEL)
NOTE: If Accelerator Pedal Position Sensor (APPS), battery, Engine
Control Module (ECM) or Powertrain Control Module (PCM) has\
been disconnected or replaced, APPS must be reprogrammed and
correct vehicle mileage and Vehicle Identification Number
(VIN) must be programmed into PCM to prevent Diagnostic
Trouble Codes (DTCs) from being set in Anti-Lock Brake System\
(ABS) module and Supplemental Restraint System (SRS) module\
.
To program PCM and clear DTCs from ABS and SRS modules,
proceed to appropriate procedure listed below. On models
equipped with a Smart Key Immobilizer Module (SKIM), if
replacing Powertrain Control Module (PCM), secret key data
must also be updated to enable engine starting. To update
secret key data, proceed to appropriate procedure listed
below.
CAUTION: DO NOT attempt to adjust screws or disassemble APPS. Settings
are preset at factory and are not intended to by changed.
Procedure For Programming APPS
Reassemble all components. Turn ignition switch to ON or RUN
position without starting engine. Slowly press accelerator pedal to
floor once and slowly release. This procedure programs APPS
calibration in ECM. Go to step 1)).
Procedure For Programming PCM & Clearing DTCs From ABS & SRS
Modules
Connect scan tool to Data Link Connector (DLC). Using scan
tool, enter correct VIN and mileage into PCM. Using scan tool
manufacturer's instructions, clear DTCs from ABS and SRS modules. Go
to step 1)).
Procedure For Updating Secret Key Data
Connect scan tool to Data Link Connector (DLC). Go to ENGINE
and then MISC menus on scan tool. Place SKIM in SECURED ACCESS MODE by
using appropriate Personal Identification Number (PIN) for this
vehicle. PIN may be obtained from owner, vehicle's invoice, or from
manufacturer. Select UPDATE THE SECRET KEY DATA. Data will be
transferred from Smart Key Immobilizer Module (SKIM) to PCM. Go to
step 1)).
1) If PCM has not been replaced, inspect vehicle to ensure
all engine components are connected. Reassemble and reconnect
components as necessary. If any DTCs have not been diagnosed, return
to appropriate test(s). If all DTCs have been diagnosed and repaired,
go to next step.
2) Ensure fuel tank is at least 1/4 full. Ensure A/C is off.
Proper way to ensure DTC is repaired is to connect scan tool to Data
Link Connector (DLC) and allow Powertrain Control Module (PCM) to ru\
n
a DTC SPECIFIC GOOD TRIP COUNTER for 2 minutes. If DTC SPECIFIC GOOD

CO M PU TE R R ELE A R N P R O CED URES

1999 D odge P ic ku p R 1500
GENERAL INFORMATION
DaimlerChrysler Computer Relearn Procedures
INTRODUCTION
Vehicles equipped with engine or transmission/transaxle
computers may require a computer relearn procedure after the vehicle
battery is disconnected. Vehicle computers memorize and store vehicle
operation patterns for optimum driveability and performance. When the
vehicle battery is disconnected, this memory is lost, resulting in a
driveability problem. Depending on the vehicle and how it is equipped,
the following driveability problems may exist:
* Rough or unstable idle.
* Hesitation or stumble.
* Rich or lean running.
* Poor fuel mileage.
* Harsh or poor transmission/transaxle shift quality.
Default data is used until NEW data from each key start is
stored. As the computer restores its memory from each new key start,
driveability is restored.
Driveability problems may occur during the computer relearn
stage. To accelerate computer relearn process after battery removal
and installation, specified computer relearn procedures should be
performed. See appropriate procedures under specified manufacturer.
COMPUTER RELEARN PROCEDURES
ALL MODELS
NOTE: Read all procedures listed to determine why each procedure is
to be performed before proceeding.
Vehicle Driveability Computer Relearn Procedure
Manufacturer does not provide a specified computer relearn
procedure for obtaining proper driveability. If vehicle battery was
disconnected or Powertrain Control Module (PCM) was replaced, driving
the vehicle will enable the PCM to perform a computer relearn
procedure for obtaining proper driveability. Inform customer that
driveability may differ from what they are accustomed to until the PCM
completes the computer relearn procedure.
NOTE: If Powertrain Control Module (PCM) was replaced, the correct
vehicle mileage and Vehicle Identification Number (VIN) must
be programmed into the PCM to prevent Diagnostic Trouble
Codes (DTCs) from being set in the Anti-Lock Brake System
(ABS) module and Supplemental Restraint System (SRS) module\
.
To program PCM and clear DTCs from ABS and SRS modules,
proceed to appropriate procedure listed. If replacing
Powertrain Control Module (PCM) on models equipped with a
Smart Key Immobilizer Module (SKIM), the secret key data must\
also be updated to enable engine starting. To update secret
key data, proceed to appropriate procedure listed.
Programming PCM & Clearing DTCs From ABS & SRS Modules
Connect scan tool to Data Link Connector (DLC) below driver's\
side of instrument panel. Using scan tool, enter correct VIN and
mileage into PCM. Using scan tool manufacturer's instructions, clear

DTCs from ABS and SRS modules.
Updating Secret Key Data
Connect scan tool to Data Link Connector (DLC) below driver's\
side of instrument panel. Go to ENGINE, then MISC menu on scan tool.
Place the SKIM in SECURED ACCESS MODE by using the appropriate
Personal Identification Number (PIN) for this vehicle. PIN may be
obtained from the owner, vehicle's invoice, or from the manufacturer.
Select UPDATE THE SECRET KEY DATA. The data will be transferred from
Smart Key Immobilizer Module (SKIM) to the PCM.
NOTE: If 3 attempts are made to enter the SECURED ACCESS MODE using
the incorrect Personal Identification Number (PIN), the
SECURED ACCESS MODE will be locked out for one hour. To exit
this locked-out mode, leave ignition switch in the ON
position for one hour with all accessories turned off. It may
be necessary to monitor battery state and connect a battery
charger.
FWD CARS & FWD VANS
Transaxle Shift Quality Quick Learn Procedure (All FWD Cars
Except Avenger & Sebring Coupe, & All FWD Vans)
1) Transaxle shift quality quick learn procedure must be
performed to provide proper transaxle operation if any of the
following have been done:
* Vehicle battery was disconnected.
* Transaxle assembly was replaced.
* Transmission Control Module (TCM) was replaced.
* Solenoid assembly was replaced.
* Valve body was reconditioned or replaced.
2) Transaxle shift quality quick learn procedure must be
performed using Chrysler's Diagnostic Readout Box III (DRB-III) scan
tool. Following conditions must be met when performing transaxle shift
quality quick learn procedure:
* Brakes must be applied.
* Engine speed must be greater than 500 RPM.
* Throttle position sensor angle must be less than 3 degrees.
* Shift lever must remain in designated position until prompted
to shift to overdrive.
* Shift lever must remain in overdrive after the shift to
overdrive until scan tool indicates procedure is complete.
* Calculated oil temperature must be within 60-200
F
(16-93C).
3) Connect scan tool to Data Link Connector (DLC) below
driver's side of instrument panel. For DLC location, see appropriate
SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
4) Go to TRANSMISSION display on scan tool. Go to
MISCELLANEOUS display on scan tool. Select QUICK LEARN PROCEDURE
display on scan tool. Follow instructions displayed on scan tool to
perform transaxle shift quality quick learn procedure. Remove scan
tool.
Transaxle Shift Quality Quick Learn Procedure (Avenger &
Sebring Coupe)
1) Transaxle shift quality quick learn procedure must be
performed to provide proper transaxle operation after replacing or
overhauling transaxle. After transaxle work is completed, clear any
Diagnostic Trouble Codes (DTCs) as necessary. Connect Chrysler's

under VERIFICATION TESTS. If voltage is one volt or more, go to next
step.
2) Turn ignition off. Using an ohmmeter, check resistance of
RESUME/ACCEL switch ground circuit at RESUME/ACCEL switch connector.
If resistance is 5 ohms or more, repair open ground circuit. Perform
TEST VER-4A under VERIFICATION TESTS. If resistance is less than 5
ohms, repair open S/C switch signal circuit. Perform TEST VER-4A under
VERIFICATION TESTS.
VERIFICATION TESTS
TEST VER-4A
NOTE: If PCM has been replaced and correct VIN and mileage have not
been programmed, a FTC will be set in ABS and air bag
modules. If vehicle is equipped with a Sentry Key Immobilizer
Module (SKIM), sentry key data must be updated to enable
starting. See COMPUTER RELEARN PROCEDURES article in GENERAL
INFORMATION.
1) If vehicle is not equipped with a diesel engine, go to
next step. If vehicle is equipped with a diesel engine, and PCM has
been disconnected or replaced, battery has been disconnected, or
Accelerator Pedal Position Sensor (APPS) has been disconnected or
replaced, APPS calibration must be programmed into PCM (diesel only).
Turn ignition on. Slowly press accelerator pedal to floor and slowly
release. DO NOT attempt to adjust screws or disassemble APPS. Go to
next step.
2) On all engines, if vehicle is equipped with ABS or air
bag, enter correct VIN and mileage in PCM. Erase DTCs in ABS and air
bag modules. Inspect vehicle to ensure all engine and speed control
system components are connected. Reassemble and reconnect components
as necessary. Using scan tool, erase DTCs from PCM.
3) Road test vehicle at a speed greater than 35 MPH. Turn S/C
switch on. Press and release SET button. If S/C does not engage,
repair is not complete. Check for related TSBs and return to TROUBLE
SHOOTING, if necessary. If speed control engages, go to next step
4) Quickly depress and release RESUME/ACCEL switch. If
vehicle speed increases by 2 MPH, go to next step. If vehicle speed
does not increase by 2 MPH, repair is not complete. Check for related
TSBs and return to TROUBLE SHOOTING, if necessary.
5) Press and hold COAST switch. Vehicle speed should
decrease. If vehicle speed decreases, go to next step. If vehicle
speed does not decrease, repair is not complete. Check for related
TSBs and return to TROUBLE SHOOTING, if necessary.
6) Using caution, depress and release brake pedal. If S/C
disengages, go to next step. If S/C does not disengage, repair is not
complete. Check for related TSBs and return to TROUBLE SHOOTING, if
necessary.
7) Bring vehicle speed to 35 MPH. Depress speed control
RESUME/ACCEL switch. If vehicle resumes to previously set speed, go to
next step. If vehicle does not resume to previously set speed, repair
is not complete. Check for related TSBs and return to TROUBLE
SHOOTING, if necessary.
8) Hold down SET switch. Vehicle speed should decrease. If
vehicle speed decreases, go to next step. If vehicle speed did not
decrease, repair is not complete. Check for related TSBs and return to
TROUBLE SHOOTING, if necessary.
9) Ensure vehicle speed is more than 35 MPH and release SET
switch. If vehicle sets a new speed, go to next step. If vehicle did
not set a new speed, repair is not complete. Check for related TSBs
and return to TROUBLE SHOOTING, if necessary.

10) Depress and release CANCEL switch. If S/C disengages, go
to next step. If S/C did not disengage, repair is not complete. Check
for related TSBs and return to TROUBLE SHOOTING, if necessary.
11) Ensure vehicle speed is greater than 35 MPH. Engage speed
control. Turn S/C on/off switch to OFF position. If speed control
disengages, system is operating correctly. Repair is complete. If
speed control does not disengage, repair is not complete. Check for
related TSBs and return to TROUBLE SHOOTING, if necessary.
TEST VER-5A
NOTE: If PCM has been replaced and correct VIN and mileage have not
been programmed, a FTC will be set in ABS and air bag
modules. If vehicle is equipped with a Sentry Key Immobilizer
Module (SKIM), sentry key data must be updated to enable
starting. See COMPUTER RELEARN PROCEDURES article in GENERAL
INFORMATION.
1) If vehicle is not equipped with a diesel engine, go to
next step. If vehicle is equipped with a diesel engine, and PCM has
been disconnected or replaced, battery has been disconnected, or
Accelerator Pedal Position Sensor (APPS) has been disconnected or
replaced, APPS calibration must be programmed into PCM (diesel only).
Turn ignition on. Slowly press accelerator pedal to floor and slowly
release. DO NOT attempt to adjust screws or disassemble APPS. Go to
next step.
2) On all engines, if vehicle is equipped with ABS or air
bag, enter correct VIN and mileage in PCM. Erase DTCs in ABS and air
bag modules. Inspect vehicle to ensure all engine and speed control
system components are connected.
3) If there are any DTCs that have not been repaired, go to
SELF-DIAGNOSTIC SYSTEM. After all DTCs have been repaired, run
appropriate monitor for previously repaired FTC.
4) Connect scan tool to DLC. Ensure fuel tank is at least 1/4
full. Turn off all accessories. Allow PCM to run appropriate monitor
and increment appropriate good trip. Enabling conditions must be met
before monitor will run.
5) Using scan tool, monitor pretest enabling conditions until
all conditions have been met. Once enabling conditions have been met,
monitor appropriate monitor.
6) If repaired FTC has reset or was seen in monitor while on
road test, repair is not complete. Check for TSBs or flash updates and
return to TROUBLE SHOOTING.
7) If appropriate monitor ran, good trip counter incremented
and no DTCs have been set, repair is complete.
REMOVAL & INSTALLATION
WARNING: Vehicle is equipped with an air bag. Air bag must be
deactivated before servicing speed control components on or
around steering column. See AIR BAG RESTRAINT SYSTEMS -
TRUCKS article.
CAUTION: When battery is disconnected, vehicle computer and memory
systems may lose memory data. Driveability problems may exist
until computer systems have completed a relearn cycle. See
COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION
before disconnecting battery.
BRAKE SWITCH
Removal