1999 DODGE RAM turn signal
[x] Cancel search: turn signalPage 1230 of 1691
STE ER IN G C O LU M N S W IT C HES
1999 D odge P ic ku p R 1500
1999 ACCESSORIES & EQUIPMENT
CHRY - Steering Column Switches
Dakota, Durango & Ram Pickup
WARNING: Deactivate air bag system before performing any service
operation involving steering column components. See
appropriate AIR BAG RESTRAINT SYSTEMS article. DO NOT apply
electrical power to any component on steering column without
first disconnecting air bag module. Air bag may deploy. Wait
at least 2 minutes after disconnecting negative battery cable
before servicing air bag system. System reserve capacitor,
integral to ACM, maintains air bag system voltage for about 2
minutes after battery is disconnected. Servicing air bag
system before 2-minute period may cause accidental air bag
deployment and possible personal injury.
DESCRIPTION
Turn signal, hazard flasher, headlight beam selector,
headlight flash-to-pass, windshield wipe, pulse wipe and windshield
wash systems use a common switch assembly (multifunction switch)
mounted within upper steering column housing.
Ignition switch and lock cylinder are incorporated into an
assembly attached to side of steering column. Ignition switch assembly
can be serviced as a separate unit, but requires removal of lock
cylinder.
COMPONENT LOCATIONS
COMPONENT LOCATIONS \
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Component Location
Combination Flasher Relay ........................... Junction Block
Horn ............................... In Right Front Corner Of Engine
Compartment
Horn Relay ............................ In Power Distribution Center
Junction Block ................. Under Left Side Of Instrument Panel
Power Distribution Center ...... In Left Side Of Engine Compartment,
On Left Inner Panel
Relay/Flasher Module ........ Under Right Side Of Instrument Panel,
Behind Glove Box
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TROUBLE SHOOTING
TURN SIGNAL AND HAZARD FLASHER SYSTEM
Bulbs Burn Out Rapidly
Check charging system. See appropriate GENERATORS &
REGULATORS article in STARTING & CHARGING SYSTEMS.
Hazard Flashers Inoperative
Blown fuse. Faulty hazard flasher. Open circuit in feed wire
to hazard switch. Faulty turn signal/hazard switch. Open or grounded
circuit in wiring to external lights.
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Hazard Warning Lights Okay To Front Lights Only
Faulty external bulbs. Faulty contact in turn signal/hazard
switch. Open circuit between hazard switch and turn signal switch.
Open or grounded circuit in wiring to rear lights.
Hazard Warning Lights Okay To Rear Lights Only
Faulty external bulbs. Faulty contact in turn signal/hazard
switch. Open or grounded circuit in wiring to front lights.
Indicator Light Inoperative, External Lights Okay
Burned-out indicator bulb in instrument cluster. Faulty
contact. Open circuit.
Indicator Light Okay, External Lights Inoperative
Open circuit in wiring to external light(s).
Indicator Light Okay, External Lights Glow Dimly Or Do Not
Flash
Loose or corroded external light connections. Poor ground
circuit at external light(s).
Turn Signals Do Not Cancel After Turn
Broken canceling pawl on turn signal switch. Improperly
aligned canceling cam. Broken or loose canceling cam.
Turn Signals Inoperative (Both Sides)
Blown fuse. Faulty turn signal flasher. Loose bulkhead
connector. Loose or faulty rear wiring harness or terminals. Open
circuit to turn signal flasher. Open circuit in feed wire to turn
signal switch. Faulty switch connections. Open or grounded circuit in
wiring to external lights.
Turn Signal Inoperative (One Side)
Faulty external bulb. Poor ground at external light. Open
circuit in wiring to external light(s). Faulty turn signal/hazard
switch.
COMPONENT TESTS
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.
NOTE: For additional testing procedures, see appropriate CRUISE
CONTROL SYSTEMS and WIPER/WASHER SYSTEMS articles.
NOTE: For component locations, see COMPONENT LOCATIONS.
HORN RELAY
1) Remove horn relay from Power Distribution Center (PDC).
Use label on PDC cover to identify and locate relay. Check continuity
between relay terminals No. 87A and 30. See Fig. 1. If continuity does
not exist, replace relay. If continuity exists, go to next step.
2) Check continuity between relay terminals No. 30 and 87. If
continuity exists, replace relay. If continuity does not exist, check
resistance between relay terminals No. 85 and 86. If resistance is not
70-80 ohms, replace relay. If resistance is 70-80 ohms, go to next
step.
3) Using jumper wires, connect positive battery voltage to
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![DODGE RAM 1999 Service Repair Manual ground. \
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IGNITION SWITCH CIRCUIT FUNCTIONS](/manual-img/12/56915/w960_56915-1232.png "DODGE RAM 1999 Service Repair Manual ground. \
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IGNITION SWITCH CIRCUIT FUNCTIONS")
ground. \
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IGNITION SWITCH CIRCUIT FUNCTIONS \
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Terminal No. (Wire Color) Circuit\
1 (DK BLU/YEL) ...................... Ignition Switch Output (START\
)
2 (DK BLU) ...................... Ignition Switch Output (START/RUN\
)
3 (GRY/BLK) (1) ..................... Red Brake Warning Light Driver
4 (PNK/BLK) ............................... Battery Feed To Ignition\
5 (BLK/ORG) ........................... Ignition Switch Output (RUN\
)
6 (BLK/WHT) ....................... Ignition Switch Output (ACC/RUN\
)
7 (RED) ................................... Battery Feed To Ignition\
( 1) - White wire on Dakota and Durango.
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Fig. 2: Identifying Ignition Switch Connector Terminals (Harness
Side)
Courtesy of Chrysler Corp.
MULTIFUNCTION SWITCH
Turn Signal/Hazard Warning Switch
Disconnect negative battery cable. Remove multifunction
switch. See MULTIFUNCTION SWITCH under REMOVAL & INSTALLATION. Check
continuity between appropriate multifunction switch terminals with
switch in specified position. See MULTIFUNCTION SWITCH TURN SIGNAL
TESTING table. See Fig. 3. If continuity is not as specified, replace
multifunction switch.
MULTIFUNCTION SWITCH TURN SIGNAL TESTING
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Switch Position Continuity Between Terminals
Neutral
Hazard Warning On ............................ 11, 12, 13, 15 & 16
Hazard Warning Off ................................... 12, 14 & 15
Left .......................................... 12 & 14; 15, 16 & 17
Right ......................................... 14 & 15; 11, 12 & 17
Optional Corner Lights
Left ..................................................... 22 & 23
Right .................................................... 23 & 24
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switch connector. See Fig. 4. If continuity does not exist, repair
open Black/Red wire. If continuity exists, go to next step.
3) Check continuity between ground and Black/Red wire at
steering column horn switch connector. If continuity does not exist,
go to next step. If continuity exists, repair short to ground in
Black/Red wire.
4) Continuity between horn switch terminal and ground.
Continuity should exist with horn switch depressed. Continuity should
not exist without horn switch depressed. If continuity is not as
specified, replace horn switch. If continuity is as specified, install
horn relay and go to HORN under COMPONENT TESTS.
TURN SIGNAL & HAZARD WARNING SYSTEMS
1) If bulbs burn out rapidly, check charging system for
overcharging condition. See appropriate GENERATORS & REGULATORS
article in STARTING & CHARGING SYSTEMS. If charging system is okay, go
to next step. If charging system is not okay, repair as necessary.
2) If problem is turn signals failing to cancel after a turn,
inspect multifunction switch or cancelling cam lobes on clockspring
for damage or improper installation. If problem exists, repair as
necessary. If problem does not exist, go to next step.
3) Turn ignition on. Actuate turn signal switch or hazard
warning switch. Observe turn signal indicator light(s) in instrument
cluster. If flash rate is very high, check for a bulb that is not lit
or is dimly lit. Repair circuit or replace bulb as necessary. If turn
signals fail to light, go to next step.
4) Turn ignition off. Check turn signal fuse in junction
block and/or hazard warning fuse in PDC. If fuses are okay, go to next
step. If either fuse is blown, repair short circuit and replace fuse.
5) Check for battery voltage at hazard warning fuse in PDC.
Turn ignition on. Check for battery voltage at turn signal fuse in
junction block. If battery voltage exists, go to next step. If battery
voltage does not exist, repair open circuit to battery or ignition
switch as necessary.
6) Turn ignition off. Disconnect negative battery cable.
Remove combination flasher from junction block and replace with a
known good unit. Connect battery cable and test operation of turn
signal and hazard warning systems. If operation is okay, discard
faulty flasher. If operation is not okay, go to next step.
7) Turn ignition on. Check for battery voltage at combination
flasher terminals No. 51 and 48 in junction block. If battery voltage
exists, go to next step. If battery voltage does not exist, repair
open circuit to fuse in junction block or PDC as necessary.
8) Disconnect negative battery cable. Check continuity
between combination flasher terminal No. 50 and ground. If continuity
exists, go to next step. If continuity does not exist, repair open
ground circuit.
9) Disconnect multifunction switch harness connector. Check
continuity between junction block terminal No. 4 and multifunction
switch terminal No. 13 (Pink wire). If continuity exists, go to next
step. If continuity does not exist, repair open in Pink wire between
multifunction switch and junction block.
10) Check continuity between junction block terminal No. 13
and multifunction switch terminal No. 17 (Red/White wire). If
continuity exists, test multifunction switch. See MULTIFUNCTION SWITCH
under COMPONENT TESTS. If continuity does not exist, repair open in
Red/White wire between junction block and multifunction switch.
REMOVAL & INSTALLATION
WARNING: Deactivate air bag system before performing any service
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threads damaged ........ A ... Require repair or replacement
of part with damaged threads.
Attaching hardware
threads stripped
(threads missing) ...... A ..... Require replacement of part
with stripped threads.
Dust boot missing ....... 2 ........ (1) Suggest replacement.
Dust boot split ......... 2 ........ ( 1) Suggest replacement.
Dust boot torn .......... 2 ........ ( 1) Suggest replacement.
Housing cracked ......... A ............ Require replacement.
Lead routing incorrect .. B .. Require rerouting according to
vehicle manufacturer's
specifications.
Loose ................... B ... Require adjustment to vehicle
manufacturer's specifications.
Missing ................. C ............ Require replacement.
Output signal incorrect . A .. Require repair or replacement.
Wire lead damaged ....... A .. Require repair or replacement.
( 1) - This condition can lead to damage of the sliding magnet,
which, in turn, causes premature sensor failure.
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AIR RIDE SUSPENSION - MODULES
AIR RIDE SUSPENSION - MODULE INSPECTION \
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Condition Code Procedure
Attaching hardware
loose .................. A ... Require repair or replacement
of loose part.
Attaching hardware
missing ................ C .. Require replacement of missing
part.
Attaching hardware
threads damaged ........ A ... Require repair or replacement
of part with damaged threads.
Attaching hardware
threads stripped
(threads missing) ...... A ..... Require replacement of part
with stripped threads.
Housing cracked ......... 2 .. Suggest repair or replacement.
Inoperative ............. A ............ Require replacement.
Missing ................. C ............ Require replacement.
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AIR RIDE SUSPENSION - RELAYS (COMPRESSOR)
AIR RIDE SUSPENSION - RELAY (COMPRESSOR) INSPECTION \
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Condition Code Procedure
Housing cracked ......... 2 ........ ( 1) Suggest replacement.
Intermittent ............ A ............ Require replacement.
Missing ................. C ............ Require replacement.
Output signal incorrect . A ............ Require replacement.
( 1) - If moisture enters the relay, it can reduce life
expectancy or impair function.
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AIR RIDE SUSPENSION - SWITCHES (ON/OFF)
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threads damaged ........ A ... Require repair or replacement
of part with damaged threads.
Attaching hardware
threads stripped
(threads missing) ...... A ..... Require replacement of part
with stripped threads.
Dust boot missing ....... 2 ........ (1) Suggest replacement.
Dust boot split ......... 2 ........ ( 1) Suggest replacement.
Dust boot torn .......... 2 ........ ( 1) Suggest replacement.
Housing cracked ......... A ............ Require replacement.
Lead routing incorrect .. B .. Require rerouting according to
vehicle manufacturer's
specifications.
Loose ................... B ... Require adjustment to vehicle
manufacturer's specifications.
Missing ................. C ............ Require replacement.
Output signal incorrect . A .. Require repair or replacement.
Wire lead damaged ....... A .. Require repair or replacement.
( 1) - This condition can lead to damage of the sliding magnet,
which, in turn, causes premature sensor failure.
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AIR RIDE SUSPENSION - MODULES
AIR RIDE SUSPENSION - MODULE INSPECTION \
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Condition Code Procedure
Attaching hardware
loose .................. A ... Require repair or replacement
of loose part.
Attaching hardware
missing ................ C .. Require replacement of missing
part.
Attaching hardware
threads damaged ........ A ... Require repair or replacement
of part with damaged threads.
Attaching hardware
threads stripped
(threads missing) ...... A ..... Require replacement of part
with stripped threads.
Housing cracked ......... 2 .. Suggest repair or replacement.
Inoperative ............. A ............ Require replacement.
Missing ................. C ............ Require replacement.
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AIR RIDE SUSPENSION - RELAYS (COMPRESSOR)
AIR RIDE SUSPENSION - RELAY (COMPRESSOR) INSPECTION \
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Condition Code Procedure
Housing cracked ......... 2 ........ ( 1) Suggest replacement.
Intermittent ............ A ............ Require replacement.
Missing ................. C ............ Require replacement.
Output signal incorrect . A ............ Require replacement.
( 1) - If moisture enters the relay, it can reduce life
expectancy or impair function.
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AIR RIDE SUSPENSION - SWITCHES (ON/OFF)
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manifold, sends input signal to Engine Control Module (ECM). ECM uses
input signal for controlling fuel control, timing and engine
protection. ECM will lower engine power if boost is too high.
Oil Pressure Sensor
Oil pressure sensor signal is input to Engine Control Module
(ECM). ECM converts signal to pressure value. Value is sent on CCD Bus\
to instrument panel gauge/light. Oil pressure sensor is located on
side of engine block, below ECM. See Fig. 2.
Power Take Off (PTO)
This input is used on vehicles equipped with a Power Take Off
(PTO) unit. When PTO is engaged, Engine Control Module (ECM) will
disable some OBD-II functions.
Water-In-Fuel (WIF) Sensor
WIF sensor is located in bottom of fuel filter/water
separator. See Fig. 2. WIF sensor delivers input signal to Engine
Control Module (ECM) when water exists in the fuel filter/water
separator. As water level increases, resistance across WIF sensor
decreases. ECM compares decrease in resistance to a high water
standard value. When resistance is 30,000-40,000 ohms, ECM will turn
on WATER-IN-FUEL warning light. WATER-IN-FUEL warning light is located
on instrument panel, just below tachometer. ECM monitors input signal
when ignition switch is in the ON position and continues to monitor
input signal until intake manifold air heater post-heat cycle is
complete.
PCM INPUT SIGNALS
A/C Switch
When A/C switch is in ON position, an input signal is
delivered from A/C switch to Engine Control Module (ECM) to indicate
that A/C operation has been requested. Once A/C operation has been
requested, an A/C request signal is delivered to ECM from A/C high-
pressure switch and A/C low-pressure switch. The A/C request signal
indicates evaporator pressure is within proper range for A/C
operation. ECM uses A/C request signal to cycle A/C compressor clutch
by using an A/C clutch relay. A/C clutch relay may also be referred to
as A/C compressor clutch relay. If A/C high-pressure switch or A/C
low-pressure switch opens, A/C request signal will not be delivered to
the ECM. ECM will then open ground circuit for A/C clutch relay and
A/C compressor clutch will be disengaged.
The A/C clutch relay is located in power distribution center
at driver's side front corner of engine compartment, near the battery.
The A/C high-pressure switch is located on discharge line, near A/C
compressor. The A/C low-pressure switch is located on top of
accumulator.
Accelerator Pedal Position Sensor (APPS) Output From ECM
Accelerator Pedal Position Sensor (APPS) is mounted on top
left of engine. See Fig. 2. Sensor provides DC voltage input signal to
Engine Control Module (ECM) to indicate throttle position. On previous\
engines, there were linkages between accelerator pedal, throttle
position sensor and injection pump. On this engine, no linkage exists
between accelerator pedal and injection pump. APPS signal is sent on
CCD Bus circuit from ECM to PCM.
Automatic Shutdown (ASD) Relay
A 12-volt input signal is delivered from ASD relay to Engine
Control Module (ECM) when ASD relay is energized. If ECM does not
receive a 12-volt input signal when ASD relay is energized, a
Diagnostic Trouble Code (FTC) will be stored in ECM. ASD relay is
Page 1465 of 1691
located in power distribution center at driver's side front corner of
engine compartment, near the battery. Automatic Shutdown (ASD) relay
may also be referred to as Auto Shutdown (ASD) relay.
Battery Temperature Sensor
Battery temperature sensor delivers input signal to
Powertrain Control Module (PCM) to indicate the battery temperature.
PCM uses battery temperature input to modify rate of output from the
charging system. Battery temperature sensor is snapped into battery
tray below driver's side battery.
Battery Voltage
Battery voltage input signal provides operating voltage to
Powertrain Control Module (PCM). This input signal keeps PCM memory
alive and informs PCM what generator output voltage is when engine is
running. PCM memory is used to store Diagnostic Trouble Codes (DTCs),
store APPS sensor voltages from previous key cycles and provide a
speed control adaptive memory.
Brake Switch
Brake switch delivers input signal to Powertrain Control
Module (PCM) to indicate when brakes are applied. PCM uses input
signal for controlling cruise control system and transmission torque
converter clutch operation on A/T models. Brake switch is located near
top of brake pedal and may also be referred to as brakelight switch.
CKP Sensor
Crankshaft Position (CKP) sensor delivers input signal (35
tooth wheel with gap) to Engine Control Module (ECM) to indicate
engine speed and crankshaft position. ECM uses CKP signal along with
other input signals for controlling injector firing sequence and
timing. Sensor is located below fuel transfer pump, on side of engine
block. See Fig. 2.
Cruise Control System Switches
Cruise control system functions, controlled by momentary
contact switches, are monitored through multiplexed input signal to
Powertrain Control Module (PCM). Resistance monitored at this input
signal, in conjunction with the length of time the PCM measures the
resistance, determines which switch feature has been selected.
Data Link Connector (DLC)
Data Link Connector (DLC) provides an input signal to
Powertrain Control Module (PCM) when using scan tool to retrieve
Diagnostic Trouble Codes (DTCs) from PCM. Input signal may also be
used when performing various tests on the PCM and electronic control
system. DLC is a 16-pin connector located at lower edge of driver's
side of instrument panel, just above accelerator pedal.
Fuel Level Sensor
The Powertrain Control Module (PCM) sends a 5-volt signal to
the fuel level sensor. The fuel level sensor will return a signal to
PCM. This signal is used for fuel gauge operation and to prevent
setting a false misfire or fuel system trouble codes. If fuel level is
less than 15 percent, PCM will not set code.
Ignition Sense
Ignition switch position input to Powertrain Control Module
(PCM). PCM uses input to determine proper output functions, including
cruise control, generator output, sensor supply and transmission
functions.
Transmission Speed Sensor (A/T Models)