2000 CHRYSLER VOYAGER coolant temperature

Symptom:
P-1281 ENGINE IS COLD TOO LONG
When Monitored and Set Condition:
P-1281 ENGINE IS COLD TOO LONG
When Monitored: Ignition key on, engine not running. Ambient temperature greater
than þ11ÉC (-11ÉF) and coolant temperature greater than þ7ÉC (19ÉF)
Set Condition: The engine does not warm to 79 degrees C (176 degrees F) while driving
for 20 minutes after start.
POSSIBLE CAUSES
ENGINE COLD TOO LONG
TEST ACTION APPLICABILITY
1 Start Engine
Drive vehicle under normal driving conditions for 20 minutes.
With the DRB, read Engine Coolant Temperature.
Did the engine warm to 79 degrees C (176 degrees F)?All
Ye s®Test Complete.
No®See pertinent service manual information for cooling system
diagnostics.
177
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Symptom:
P-1494 LEAK DETECTION PUMP PRESSURE SWITCH
When Monitored and Set Condition:
P-1494 LEAK DETECTION PUMP PRESSURE SWITCH
When Monitored: Immediately after a cold start, with ambient temperature between 4
deg C (40 deg F) and 32 deg C (90 deg F) and coolant temperature within ±12 deg C (10 deg
F) of ambient temperature.
Set Condition: The state of the switch does not change when the solenoid is energized.
POSSIBLE CAUSES
FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
LDP PRESSURE SWITCH CIRCUIT SHORTED TO GROUND
LDP SWITCH SENSE CIRCUIT OPEN
LDP DEFECTIVE
LDP WIRING HARNESS INTERMITTENT DEFECT
LDP WIRING HARNESS OBSERVABLE DEFECT
LDP VACUUM HOSE LEAKING OR OBSTRUCTED
PCM DEFECTIVE
TEST ACTION APPLICABILITY
1 Start the engine and allow the engine to idle.
With the DRB, perform the Leak Detect Pump Test.
Select 1 to Pump.
Press the down arrow on the DRB several times.
The LEAK DETECT PUMP SW state should change from Open (UP) to CLOSED
(DN).
Did the Leak Detect Pump Switch state change as described?All
Ye s®Go To 2
No®Go To 4
206
DRIVEABILITY
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Symptom:
P-1495 LEAK DETECTION PUMP SOLENOID CIRCUIT
When Monitored and Set Condition:
P-1495 LEAK DETECTION PUMP SOLENOID CIRCUIT
When Monitored: Immediately after a cold start, with ambient temperature between 4
deg C (40 deg F) and 32 deg C (90 deg F) and coolant temperature within ±12 deg C (10 deg
F) of ambient temperature.
Set Condition: The state of the solenoid does not change.
POSSIBLE CAUSES
FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
LDP DEFECTIVE
LDP SOLENOID CKT WIRING HARNESS INTERMITTENT DEF
LDP SOLENOID CKT WIRING HARNESS OBSERVABLE DEFECT
LDP SOLENOID CONTROL CIRCUIT OPEN
LDP SOLENOID CONTROL CIRCUIT SHORT TO GROUND
PCM DEFECTIVE
NO POSSIBLE CAUSES REMAINING
TEST ACTION APPLICABILITY
1 Ignition On, Engine Not Running
With the DRB, actuate the LDP Pump Solenoid.
Is it clicking?All
Ye s®Go To 2
No®Go To 5
2 Ignition On, Engine Not Running.
With the DRB, actuate the LDP Solenoid.
While monitoring the LDP Switch state, wiggle Wiring Harness from the LDP
Solenoid to PCM.
Did the LDP Switch state ever change from up to down when wiggled?All
Ye s®Repair as necessary where wiggling caused problem to appear.
Perform Powertrain Verification Test VER-6A.
No®Go To 3
3 Ignition Off
Using the schematic as a guide, inspect the Wiring and Connectors.
Were any problems found?All
Ye s®Repair as necessary.
Perform Powertrain Verification Test VER-6A.
No®Go To 4
209
DRIVEABILITY
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DATA LINK CONNECTOR - BLACK 16 WAYCAV CIRCUIT FUNCTION
1- -
2- -
3 D1 20VT/BR CCD BUS (+)
4 Z2 20BK/LG GROUND
5 Z11 20BK/WT GROUND
6 D20 20LG SCI RECEIVE
7 D21 20PK SCI TRANSMIT
8- -
9- -
10 - -
11 D2 20WT/BK CCD BUS (-)
12 - -
13 - -
14 D6 20PK/LB SCI RECEIVE
15 - -
16 M1 20PK FUSED B(+)
EGR SOLENOID - GRAY 2 WAYCAV CIRCUIT FUNCTION
1 K35 18GY/YL EGR SOLENOID CONTROL
2 F87 18WT/BK FUSED IGNITION SWITCH OUTPUT (ST-RUN)
ENGINE COOLANT TEMPERATURE SENSOR - BLACK 2 WAYCAV CIRCUIT FUNCTION
1 K4 18BK/LB SENSOR GROUND
2 K2 18TN/BK ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
ENGINE OIL PRESSURE SWITCH - GREEN 2 WAYCAV CIRCUIT FUNCTION
1 G6 16GY ENGINE OIL PRESSURE SWITCH SENSE
2- -
C
O
N
N
E
C
T
O
R
P
I
N
O
U
T
S
336
CONNECTOR PINOUTS
ProCarManuals.com

POWERTRAIN CONTROL MODULE C1 - BLACK 40 WAYCAV CIRCUIT FUNCTION
1- -
2 K18 18RD/YL IGNITION COIL NO. 3 DRIVER
3 K17 18DB/TN IGNITION COIL NO. 2 DRIVER
4- -
5 V32 18YL/RD SPEED CONTROL ON/OFF SWITCH SENSE
6 A142 18DG/OR AUTOMATIC SHUT DOWN RELAY OUTPUT
7 K13 18YL/WT FUEL INJECTOR NO. 3 DRIVER
8 K20 18DG GENERATOR FIELD DRIVER (+)
9- -
10 Z12 18BK/TN GROUND
11 K19 18GY/RD IGNITION COIL NO. 1 DRIVER
12 - -
13 K11 18WT/DB FUEL INJECTOR NO. 1 DRIVER
14 K58 18BR/DB FUEL INJECTOR NO. 6 DRIVER
15 K38 18GY FUEL INJECTOR NO. 5 DRIVER
16 K14 18LB/BR FUEL INJECTOR NO. 4 DRIVER
17 K12 18TN/WT FUEL INJECTOR NO. 2 DRIVER
18 - -
19 - -
20 F87 18WT/BK FUSED IGNITION SWITCH OUTPUT (ST-RUN)
21 - -
22 G3 18BK/PK SERVICE ENGINE SOON INDICATOR DRIVER
23 - -
24 - -
25 K42 18DB/LG KNOCK SENSOR SIGNAL
26 K2 18TN/BK ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
27 K127 18BK/OR OXYGEN SENSOR GROUND
28 - -
29 - -
30 K41 18BK/DG OXYGEN SENSOR 1/1 SIGNAL
31 K90 18TN (EXCEPT 3.0L) SMART START RELAY CONTROL
32 K24 18GY/BK CRANKSHAFT POSITION SENSOR SIGNAL
33 K44 18TN/YL CAMSHAFT POSITION SENSOR SIGNAL
34 - -
35 K22 18OR/DB THROTTLE POSITION SENSOR SIGNAL
36 K1 18DG/RD MANIFOLD ABSOLUTE PRESSURE SENSOR SIGNAL
37 K21 18BK/RD (2.4L) INTAKE AIR TEMPERATURE SIGNAL
38 C103 18DG/LB (EXCEPT
3.0L)A/C SWITCH SIGNAL
39 - -
40 K35 18GY/YL EGR SOLENOID CONTROL
C
O
N
N
E
C
T
O
R
P
I
N
O
U
T
S
349
CONNECTOR PINOUTS
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