Dodge Ram Truck 1500-2500-3500. Manual — part 769
DIAGNOSIS AND TESTING
CIGAR LIGHTER OUTLET
For complete circuit diagrams, refer to the appropriate wiring information. The wiring information includes wir-
ing diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector
pin-out information and location views for the various wire harness connectors, splices and grounds.
1. Check the fused B(+) fuse in the Integrated Power Module (IPM). If OK, go to Step 2. If not OK, repair the
shorted circuit or component as required and replace the inoperative fuse.
2. Turn the ignition switch to the Run position. Check for battery voltage at the fused B(+) fuse in the IPM. If OK,
go to Step 3. If not OK, repair the open or short as required.
3. Remove the cigar lighter knob and element from the cigar lighter outlet shell. Check for continuity between the
inside circumference of the cigar lighter outlet shell and a good ground. there should be continuity. If OK, go to
Step 4. If not OK, go to Step 5.
4. Turn the ignition switch to the Run position. Check for battery voltage at the insulated contact located at the back
of the cigar lighter outlet shell. If OK, replace the inoperative cigar lighter knob and element. If not OK, go to
Step 5.
5. Turn the ignition switch to the Off position. Disconnect and isolate the battery negative cable. Check for continuity
between the ground circuit cavity of the cigar lighter wire harness connector and a good ground. There should be
continuity. If OK, go to Step 6. If not OK, repair the open ground circuit to ground as required.
6. Connect the battery negative cable. Turn the ignition switch to the Accessory or Run positions. Check for battery
voltage at the fused B(+) circuit cavity of the cigar lighter wire harness connector. If OK, replace the inoperative
cigar lighter outlet. If not OK, repair the open fused B(+) circuit to the IPM fuse as required.
REMOVAL
1. Disconnect and isolate the battery negative cable.
2. Pull the cigar lighter knob and element (1) out of
the cigar lighter receptacle base (6), or unsnap the
protective cap from the power outlet receptacle
base (6).
3. Look inside the cigar lighter or power outlet recep-
tacle base and note the position of the rectangular
retaining bosses (3) of the mount that secures the
receptacle base to the panel (4).
4. Insert a pair of external snap ring pliers (5) into the
cigar lighter or power outlet receptacle base and
engage the tips of the pliers with the retaining
bosses of the mount.
5. Squeeze the pliers to disengage the mount retain-
ing bosses from the receptacle base and, using a
gentle rocking motion, pull the pliers and the recep-
tacle base out of the mount.
6. Pull the receptacle base away from the instrument
panel far enough to access the instrument panel
wire harness connector (2).
7. Disconnect the instrument panel wire harness connector (2) from the cigar lighter or power outlet receptacle base
(6).
8. Remove the cigar lighter or power outlet mount from the instrument panel.
INSTALLATION
1. Connect the instrument panel wire harness connector to the cigar lighter or power outlet receptacle base con-
nector receptacle.
2. Install the cigar lighter or power outlet mount into the instrument panel.
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3. Align the splines on the outside of the cigar lighter or power outlet receptacle base connector receptacle with the
grooves on the inside of the mount.
4. Press firmly on the cigar lighter or power outlet receptacle base until the retaining bosses of the mount are fully
engaged in their receptacles.
5. Install the cigar lighter knob and element into the cigar lighter receptacle base, or the protective cap into the
power outlet receptacle base.
6. Connect the battery negative cable.
POWER OUTLET-CONSOLE
DESCRIPTION
Two power outlets are utilized on this model. One in the instrument panel center lower bezel and the other in the
center console. The power outlet bases are secured by a snap fit within the instrument panel or trim panel. A plastic
protective cap snaps into the power outlet base when the power outlet is not being used, and hangs from the power
outlet base mount by an integral bail strap while the power outlet is in use.
The power outlet receptacle unit and the accessory power outlet protective cap are available for service. The power
outlet receptacle cannot be repaired and, if faulty or damaged, it must be replaced.
OPERATION
The power outlet base or receptacle shell is connected to ground, and an insulated contact in the bottom of the
shell is connected to battery current. The power outlet receives battery voltage from a fuse in the integrated power
module at all times.
While the power outlet is very similar to a cigar lighter base unit, it does not include the two small spring-clip retain-
ers inside the bottom of the receptacle shell that are used to secure the cigar lighter heating element to the insu-
lated contact.
DIAGNOSIS AND TESTING
POWER OUTLET
For complete circuit diagrams, refer to the appropriate wiring information. The wiring information includes wir-
ing diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector
pin-out information and location views for the various wire harness connectors, splices and grounds.
1. Check the fused B(+) fuse in the Integrated Power Module (IPM). If OK, go to Step 2. If not OK, repair the
shorted circuit or component as required and replace the inoperative fuse.
2. Turn the ignition switch to the Run position. Check for battery voltage at the fused B(+) fuse in the IPM. If OK,
go to Step 3. If not OK, repair the open or short as required.
3. Remove the cigar lighter knob and element from the cigar lighter outlet shell. Check for continuity between the
inside circumference of the cigar lighter outlet shell and a good ground. there should be continuity. If OK, go to
Step 4. If not OK, go to Step 5.
4. Turn the ignition switch to the Run position. Check for battery voltage at the insulated contact located at the back
of the cigar lighter outlet shell. If OK, replace the inoperative cigar lighter knob and element. If not OK, go to
Step 5.
5. Turn the ignition switch to the Off position. Disconnect and isolate the battery negative cable. Check for continuity
between the ground circuit cavity of the cigar lighter wire harness connector and a good ground. There should be
continuity. If OK, go to Step 6. If not OK, repair the open ground circuit to ground as required.
6. Connect the battery negative cable. Turn the ignition switch to the Accessory or Run positions. Check for battery
voltage at the fused B(+) circuit cavity of the cigar lighter wire harness connector. If OK, replace the inoperative
cigar lighter outlet. If not OK, repair the open fused B(+) circuit to the IPM fuse as required.
DR/DH
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REMOVAL
1. Disconnect and isolate the battery negative cable.
2. Pull the cigar lighter knob and element (1) out of
the cigar lighter receptacle base (6), or unsnap the
protective cap from the power outlet receptacle
base (6).
3. Look inside the cigar lighter or power outlet recep-
tacle base and note the position of the rectangular
retaining bosses (3) of the mount that secures the
receptacle base to the panel (4).
4. Insert a pair of external snap ring pliers (5) into the
cigar lighter or power outlet receptacle base and
engage the tips of the pliers with the retaining
bosses of the mount.
5. Squeeze the pliers to disengage the mount retain-
ing bosses from the receptacle base and, using a
gentle rocking motion, pull the pliers and the recep-
tacle base out of the mount.
6. Pull the receptacle base away from the instrument
panel far enough to access the instrument panel
wire harness connector (2).
7. Disconnect the instrument panel wire harness connector (2) from the cigar lighter or power outlet receptacle base
(6).
8. Remove the cigar lighter or power outlet mount from the instrument panel.
INSTALLATION
1. Connect the instrument panel wire harness connector to the cigar lighter or power outlet receptacle base con-
nector receptacle.
2. Install the cigar lighter or power outlet mount into the instrument panel.
3. Align the splines on the outside of the cigar lighter or power outlet receptacle base connector receptacle with the
grooves on the inside of the mount.
4. Press firmly on the cigar lighter or power outlet receptacle base until the retaining bosses of the mount are fully
engaged in their receptacles.
5. Install the cigar lighter knob and element into the cigar lighter receptacle base, or the protective cap into the
power outlet receptacle base.
6. Connect the battery negative cable.
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ENGINE
TABLE OF CONTENTS
page
page
ENGINE - ELECTRICAL DIAGNOSTICS -
3.7L/4.7L/5.7L. . . . . . . . . . . . . . . . . . . . . . . . . . . 1
ENGINE - ELECTRICAL DIAGNOSTICS -
DIESEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1045
ENGINE - ELECTRICAL DIAGNOSTICS -
SRT-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1486
INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . 2527
ENGINE - ELECTRICAL DIAGNOSTICS - 3.7L/4.7L/5.7L
TABLE OF CONTENTS
page
page
ENGINE - ELECTRICAL DIAGNOSTICS -
3.7L/4.7L/5.7L
DIAGNOSIS AND TESTING
PRE-DIAGNOSTIC TROUBLESHOOTING
PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . 5
P0016–CRANKSHAFT / CAMSHAFT TIMING
MISALIGNMENT . . . . . . . . . . . . . . . . . . . . . . . 8
P0031-O2 SENSOR 1/1 HEATER CIRCUIT
LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
P0032-O2 SENSOR 1/1 HEATER CIRCUIT
HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
P0037-O2 SENSOR 1/2 HEATER CIRCUIT
LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
P0038-O2 SENSOR 1/2 HEATER CIRCUIT
HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
P0051-O2 SENSOR 2/1 HEATER CIRCUIT
LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
P0052-O2 SENSOR 2/1 HEATER CIRCUIT
HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
P0057-O2 SENSOR 2/2 HEATER CIRCUIT
LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
P0058-O2 SENSOR 2/2 HEATER CIRCUIT
HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
P0068-MANIFOLD PRESSURE/THROTTLE
POSITION CORRELATION . . . . . . . . . . . . . . . 50
SENSOR PERFORMANCE . . . . . . . . . . . . . . . 60
SENSOR CIRCUIT LOW . . . . . . . . . . . . . . . . 66
SENSOR CIRCUIT HIGH . . . . . . . . . . . . . . . . 69
P0107-MANIFOLD ABSOLUTE PRESSURE
SENSOR CIRCUIT LOW . . . . . . . . . . . . . . . . 73
P0108-MANIFOLD ABSOLUTE PRESSURE
SENSOR CIRCUIT HIGH . . . . . . . . . . . . . . . . 78
P0111-INTAKE AIR TEMPERATURE SENSOR
RATIONALITY . . . . . . . . . . . . . . . . . . . . . . . . 83
SENSOR CIRCUIT LOW . . . . . . . . . . . . . . . . 88
SENSOR CIRCUIT HIGH . . . . . . . . . . . . . . . . 91
P0116–ENGINE COOLANT TEMPERATURE
SENSOR CIRCUIT PERFORMANCE . . . . . . . 95
P0117-ENGINE COOLANT TEMPERATURE
SENSOR CIRCUIT LOW . . . . . . . . . . . . . . . . 101
P0118-ENGINE COOLANT TEMPERATURE
SENSOR CIRCUIT HIGH . . . . . . . . . . . . . . . 105
P0121-THROTTLE POSITION SENSOR 1
PERFORMANCE . . . . . . . . . . . . . . . . . . . . . 110
P0122-THROTTLE POSITION SENSOR 1
CIRCUIT LOW (3.7L, 4.7L) . . . . . . . . . . . . . . 119
P0122-THROTTLE POSITION SENSOR 1
CIRCUIT LOW (5.7L) . . . . . . . . . . . . . . . . . . 124
P0123-THROTTLE POSITION SENSOR 1
CIRCUIT HIGH (3.7L, 4.7L) . . . . . . . . . . . . . . 129
P0123-THROTTLE POSITION SENSOR 1
CIRCUIT HIGH (5.7L) . . . . . . . . . . . . . . . . . . 134
P0125-INSUFFICIENT COOLANT TEMP FOR
CLOSED-LOOP FUEL CONTROL . . . . . . . . . 139
P0129-BAROMETRIC PRESSURE OUT-OF-
RANGE LOW . . . . . . . . . . . . . . . . . . . . . . . . 152
P0131-O2 SENSOR 1/1 CIRCUIT LOW
DR/DH
ENGINE
9 - 1
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