Dodge Ram Truck 1500-2500-3500. Manual — part 425

MIC-TURN HAZARD SWITCH INPUT CIRCUIT SHORTED (CONTINUED)

3.

WIPER/TURN/BEAM SELECT SWITCH SENSE CIRCUIT SHORT TO GROUND

Turn the ignition off.

Disconnect the Multifunction Switch connector.

Disconnect the Instrument Cluster C4 connector.

Measure the resistance of the Wiper/Turn/Beam Select Switch Sense
circuit to ground.

Is the resistance below 5.0 ohms?

Yes

>> Repair the Wiper/Turn/Beam select switch sense circuit..

Perform BODY VERIFICATION TEST - VER 1.

No

>> Replace the Instrument Cluster.

Perform BODY VERIFICATION TEST - VER 1.

8L - 106

LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS

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LAMPS/LIGHTING - EXTERIOR - SERVICE INFORMATION

TABLE OF CONTENTS

page

page

LAMPS/LIGHTING - EXTERIOR - SERVICE

INFORMATION
DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . 109

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . 111

WARNING

WARNINGS - LAMPS/LIGHTING -

EXTERIOR . . . . . . . . . . . . . . . . . . . . . . . . . . 114

DIAGNOSIS AND TESTING

LAMPS/LIGHTING - EXTERIOR

. . . . . . . . . . 114

STANDARD PROCEDURE

FRONT LAMP AIMING

. . . . . . . . . . . . . . . . . 119

SPECIFICATIONS

LAMPS/LIGHTING - EXTERIOR

. . . . . . . . . . 121

SWITCH-BACK UP LAMP

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . 122

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . 122

DIAGNOSIS AND TESTING

BACKUP LAMP SWITCH

. . . . . . . . . . . . . . . 122

SWITCH-STOP LAMP

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . 123

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . 123

DIAGNOSIS AND TESTING

BRAKE LAMP SWITCH

. . . . . . . . . . . . . . . . 124

REMOVAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . 125

LAMP-HIGH MOUNTED STOP

REMOVAL

BULB

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

LAMP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

INSTALLATION

BULB

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

LAMP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

CLEARANCE LAMP

REMOVAL

BULB

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

LAMP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

INSTALLATION

BULB

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

LAMP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

LAMP-FOG

REMOVAL

BULB

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

LAMP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

INSTALLATION

BULB

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

LAMP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

RELAY-FOG LAMP

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . 132

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . 132

FRONT LAMP UNIT

STANDARD PROCEDURE

FRONT LAMP UNIT MOISTURE CLEARING

. 132

REMOVAL

BULB - PARK/TURN SIGNAL

. . . . . . . . . . . . 133

BULB - HEADLAMP

. . . . . . . . . . . . . . . . . . . 133

LAMP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

INSTALLATION

BULB - PARK/TURN SIGNAL

. . . . . . . . . . . . 135

BULB - HEADLAMP

. . . . . . . . . . . . . . . . . . . 137

LAMP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

SWITCH-HEADLAMP

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . 139

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . 140

DIAGNOSIS AND TESTING

HEADLAMP SWITCH

. . . . . . . . . . . . . . . . . . 140

REMOVAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . 142

LICENSE PLATE LAMP

REMOVAL

BULB

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

LAMP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

INSTALLATION

BULB

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

LAMP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

LAMP-MARKER

REMOVAL

BULB - REAR FENDER

. . . . . . . . . . . . . . . . 147

LAMP - REAR FENDER

. . . . . . . . . . . . . . . . 147

BULB - TAILGATE

. . . . . . . . . . . . . . . . . . . . 148

LAMP - TAILGATE

. . . . . . . . . . . . . . . . . . . . 148

INSTALLATION

BULB - REAR FENDER

. . . . . . . . . . . . . . . . 149

LAMP - REAR FENDER

. . . . . . . . . . . . . . . . 150

BULB - TAILGATE

. . . . . . . . . . . . . . . . . . . . 150

LAMP - TAILGATE

. . . . . . . . . . . . . . . . . . . . 151

SWITCH-MULTIFUNCTION

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . 152

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . 152

DIAGNOSIS AND TESTING

MULTI-FUNCTION SWITCH

. . . . . . . . . . . . . 153

REMOVAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . 156

PARK BRAKE SWITCH

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . 158

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . 158

DIAGNOSIS AND TESTING

PARK BRAKE SWITCH

. . . . . . . . . . . . . . . . 158

REMOVAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . 160

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LAMPS/LIGHTING - EXTERIOR - SERVICE INFORMATION

8L - 107

RELAY-PARK LAMP

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . 160

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . 160

LAMP-TAIL/STOP/TURN

REMOVAL

BULB - PICK-UP

. . . . . . . . . . . . . . . . . . . . . 161

LAMP - PICK-UP

. . . . . . . . . . . . . . . . . . . . . 162

BULB - CAB & CHASSIS

. . . . . . . . . . . . . . . 163

LAMP - CAB & CHASSIS

. . . . . . . . . . . . . . . 163

INSTALLATION

BULB - PICK-UP

. . . . . . . . . . . . . . . . . . . . . 163

LAMP - PICK-UP

. . . . . . . . . . . . . . . . . . . . . 164

BULB - CAB & CHASSIS

. . . . . . . . . . . . . . . 165

LAMP - CAB & CHASSIS

. . . . . . . . . . . . . . . 166

TRAILER TOW CONNECTOR

REMOVAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . 167

RELAY-TRAILER TOW

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . 168

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . 168

WIRING-TRAILER TOW

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . 169

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . 170

CAM-TURN SIGNAL CANCEL

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . 170

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . 170

LAMP-UNDERHOOD

REMOVAL

BULB

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171

LAMP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

INSTALLATION

BULB

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

LAMP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173

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LAMPS/LIGHTING - EXTERIOR - SERVICE INFORMATION

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LAMPS/LIGHTING - EXTERIOR - SERVICE INFORMATION

DESCRIPTION

The exterior lighting system for this model includes the following exterior lamp units:

Cab Clearance Lamps (1) - Vehicles equipped with this option have five individual amber clearance lamp
units mounted across the roof panel just rearward of the upper windshield header.

Center High Mounted Stop Lamp (6) - A standard equipment Center High Mounted Stop Lamp (CHMSL) is
centered on the vertical surface at the rear of the roof panel just above the back glass opening at the rear of
the truck cab. This CHMSL also incorporates two integral cargo lamps, one located at each outboard side of
the CHMSL.

Front Fog Lamps (5) - Vehicles equipped with this option have a fog lamp unit mounted near each outboard
end of the front bumper support, behind the lower portion of the front fascia.

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LAMPS/LIGHTING - EXTERIOR - SERVICE INFORMATION

8L - 109

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