Chrysler Town & Country/Voyager, Dodge Caravan, Plymouth Voyager. Manual — part 22
(2) Verify that the electrical connector is attached to
the Canister Purge Solenoid (Fig. 3).
(3) Verify that vacuum connection at Canister Purge
Solenoid is secure and not leaking.
(4) Verify the harness connector is attached to the
MAP sensor (Fig. 4).
(5) Verify manifold absolute pressure sensor vacuum
hose is attached at MAP sensor (Fig. 4).
(6) Verify that alternator wiring and belt are cor-
rectly installed and tightened.
(7) Verify that hoses are securely attached to vapor
canister (Fig. 5).
(8) Verify that the throttle body wiring harness is
connected to main harness.
(9) Verify the harness connector is attached to AIS
motor (Fig. 6).
(10) Verify the harness connector is attached to the
throttle position sensor (Fig. 6).
(11) Verify the harness connector is attached to the
fuel injector (Fig. 6).
(12) Verify the hose from PCV valve is securely
attached to the intake manifold vacuum port (Fig. 7).
Fig. 3 Canister Purge Solenoid
Fig. 4 Manifold Absolute Pressure (MAP) Sensor
Location
Fig. 5 Vapor Canister
Fig. 6 Throttle Body Wiring Connections
Fig. 7 Vacuum Hose from Intake Manifold to PCV
Valve
.
FUEL SYSTEM
14 - 35
(13) Verify the vacuum connections on the front and
rear of throttle body are secure and not leaking (Figs.
8, and 9).
(14) Verify the heated air door vacuum connection is
connected and not leaking.
(15) Verify power brake and speed control vacuum
connectors are tight (Fig. 10).
(16) Verify all ignition cables are in correct order and
seated into place (Fig. 11).
(17) Verify electrical connector is attached to coolant
temperature sensor (Fig. 12).
(18) Verify
battery
negative
ground
eyelet
is
mounted to the cylinder head (left side) (Fig. 12).
(19) Verify the harness connector is attached to
distributor (Fig. 13).
(20) Verify radiator fan electrical connection is se-
cure.
(21) Verify oil pressure switch electrical connections
are secure (Fig. 13).
(22) On vehicles with an automatic transmission,
ensure the neutral safety switch electrical connector is
secure (Fig. 14).
Fig. 8 Throttle Body Vacuum Ports—Front
Fig. 9 Throttle Body Vacuum Ports—Rear
Fig. 10 Power Brake and Speed Control Vacuum
Connection
Fig. 11 Ignition Cable Routing and Connection
Fig. 12 Coolant Temperature Sensor
14 - 36
FUEL SYSTEM
.
G(23) On vehicles with an automatic transmission,
check torque convertor lockup solenoid electrical con-
nection (Fig. 14).
(24) Check the 60-way electrical connection at the
engine controller for damage or spread terminals.
Verify that the 60-way connector is fully inserted into
the socket on the Engine Controller (Fig. 15). Ensure
that wires are not stretched or pulled out of the
connector.
(25) Verify all electrical connectors are fully inserted
into relays (Fig. 16 and Fig. 17).
(26) Ensure battery connections are clean and tight.
(27) Verify engine harness to main harness connec-
tions are fully inserted.
Fig. 13 Distributor, Oil Pressure Switch, and Radia-
tor Fan Electrical Connections
Fig. 14 Automatic Transmission Electrical Connec-
tions
Fig. 15 Engine Controller Electrical Connector
Fig. 16 ASD, Fuel Pump, Radiator Fan and Starter
Relays
.
FUEL SYSTEM
14 - 37
(28) Check distance sensor connector (Fig. 18).
(29) Verify engine ground strap is attached at the
engine and dash panel (Figs. 19 and 20).
(30) Verify the harness connector is attached to the
heated oxygen sensor (Fig. 21).
(31) Check Hose and Wiring Connections at Fuel
Pump. Check that wiring connector is making contact
with terminals on pump.
ON BOARD DIAGNOSTICS
The engine controller has been programmed to moni-
tor many different circuits of the fuel injection system.
If a problem is sensed with a monitored circuit often
enough to indicate an actual problem, the controller
stores a fault. If the problem is repaired or ceases to
exist, the engine controller cancels the Fault Code after
51 vehicle key on/off cycles.
Certain criteria must be met for a fault code to be
entered into engine controller memory. The criteria
may be a specific range of engine RPM, engine tem-
perature, and/or input voltage to the engine controller.
It is possible that a fault code for a monitored circuit
may not be entered into memory even though a mal-
function has occurred. This may happen because one of
the fault code criteria for the circuit has not been met.
For example, assume that one of the fault code
criteria for the MAP sensor circuit is that the engine
must be operating between 750 and 2000 RPM to be
monitored for a fault code. If the MAP sensor output
circuit shorts to ground when engine
Fig. 17 A/C Clutch and A/C Fan Relays
Fig. 18 Distance Sensor Wiring Connection
Fig. 19 Engine Ground Strap at Intake Manifold
Fig. 20 Engine Ground Strap to Dash Panel
Fig. 21 Heated Oxygen Sensor Electrical Connec-
tion
14 - 38
FUEL SYSTEM
.
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