torque CHRYSLER VOYAGER 2000 Diagnostic Manual

Symptom:
P-0740 TORQUE CONV CLUTCH, NO RPM DROP AT LOCKUP
When Monitored and Set Condition:
P-0740 TORQUE CONV CLUTCH, NO RPM DROP AT LOCKUP
When Monitored: Continuously when no matured or maturing Trouble Code and throttle
position >10% and constant for 4.4 seconds before TCC engagement requested: No TCC
solenoid circuit, any cam/crank-related code, VSS, any TPS-related code and Battery
voltage >11.0
Set Condition: Torque Converter malfunctions that are detected are the FTC not locking
up properly when desired, and the torque converter not unlocking properly when desired.
3 consecutive test failures over one trip will store the code. 2 bad trips will set the code.
POSSIBLE CAUSES
FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
DIFF, SHAFT, OR GEARS DEFECTIVE
TCC SOL DEFECTIVE
TORQUE CONVERTER ASSEMBLY DEF OR TCC SOL STUCK
TRANSMISSION FLUID DIRTY OR LEVEL LOW
VEHICLE CONFIGURATION NON-STANDARD
TEST ACTION APPLICABILITY
1 Ignition On, Engine Not Running
With the DRB, read codes.
Is the Global Good Trip displayed and equal to 0?TRANSMISSION -
AUTOMATIC
3-SPD, 31TH
Ye s®Go To 2
No®Test Complete.
2 Ignition Off
At the9Cooler In9port puta0to300PSIgauge using a9T9. Ensure line is long
enough to reach in driver's side of vehicle so gauge can be monitored while driving.
Road test vehicle. Gear select in drive. While monitoring DRB, achieve 50 MPH.
While doing this, notice the gauge will read around 15 PSI until lockup is achieved
in 3rd gear. If the TCC Solenoid is operating properly, the gauge pressure will
fluctuate when lockup is achieved.
Did gauge fluctuate?TRANSMISSION -
AUTOMATIC
3-SPD, 31TH
Ye s®Go To 3
No®Refer to service instructions for proper service procedure on
Torque Converter Assembly or stuck TCC Solenoid and repair as
necessary.
Perform Powertrain Verification Test VER-5A.
302
TRANSMISSION
ProCarManuals.com

TEST ACTION APPLICABILITY
3 Ignition Off
Check Transmission Fluid level and ensure it is clear of any debris.
Is the Transmission Fluid okay?TRANSMISSION -
AUTOMATIC
3-SPD, 31TH
Ye s®Go To 4
No®Repair as necessary.
Perform Powertrain Verification Test VER-5A.
4 Ignition Off
Disconnect the TCC Solenoid connector.
Note: Check connectors - Clean/repair as necessary.
Turn key on.
Use a Voltmeter in the following step.
Using a Voltmeter, measure the Fused Ignition Switch Output Circuit at Solenoid
Connector.
Is the voltage above 10.0 volts?TRANSMISSION -
AUTOMATIC
3-SPD, 31TH
Ye s®Go To 5
No®Repair the open Fused Ignition Switch Output Circuit.
Perform Powertrain Verification Test VER-5A.
5 Ignition Off
Disconnect the TCC Solenoid connector.
Note: Check connectors - Clean/repair as necessary.
With an Ohmmeter, measure across the Solenoid for resistance.
Was resistance between 30.0 and 50.0 ohms?TRANSMISSION -
AUTOMATIC
3-SPD, 31TH
Ye s®Go To 6
No®Replace TCC Solenoid.
Perform Powertrain Verification Test VER-5A.
6 Drive Vehicle
Maintain 50 MPH per DRB. Wait 10 seconds in lockup. Record Engine RPM.
Was engine RPM 2200 +/- 50 RPM?TRANSMISSION -
AUTOMATIC
3-SPD, 31TH
Ye s®Go To 7
No®Inspect Differential, Output Shaft, or Gear Box. Refer to service
instructions for proper diagnosis.
Perform Powertrain Verification Test VER-5A.
7 Ignition Off
Remove VSS.
Note: Check connectors - Clean/repair as necessary.
Inspect sensor and gear for damage, also improper wheel size.
Were any problems found?TRANSMISSION -
AUTOMATIC
3-SPD, 31TH
Ye s®Repair as necessary.
Perform Powertrain Verification Test VER-5A.
No®Test Complete.
303
TRANSMISSION
P-0740 TORQUE CONV CLUTCH, NO RPM DROP AT LOCKUP ÐContinued
ProCarManuals.com

Symptom:
P-0743 TORQUE CONVERTER CLUTCH SOLENOID CIRCUIT
When Monitored and Set Condition:
P-0743 TORQUE CONVERTER CLUTCH SOLENOID CIRCUIT
When Monitored: With the ignition key on.
Set Condition: An open or shorted condition is detected in the Torque Converter Clutch
Solenoid Control Circuit.
POSSIBLE CAUSES
FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
TORQUE CONVERTER CLUTCH SOLENOID DEFECTIVE
TCC SOLENOID CIRCUIT W/H INTERMITTENT DEFECT
TCC SOLENOID CIRCUIT W/H OBSERVABLE DEFECT
TCC SOLENOID CONTROL CIRCUIT OPEN
TCC SOLENOID CONTROL CIRCUIT SHORT TO GROUND
PCM DEFECTIVE (TCC SOLENOID CONTROL CIRCUIT)
TEST ACTION APPLICABILITY
1 Ignition On, Engine Not Running
With the DRB, read codes.
Is the Global Good Trip displayed and equal to 0?TRANSMISSION -
AUTOMATIC
3-SPD, 31TH
Ye s®Go To 2
No®Go To 7
2 Ignition Off
Disconnect the TCC Solenoid Connector.
Note: Check connectors - Clean/repair as necessary.
Key on.
With the Voltmeter, probe the voltage of the Fused Ignition Switch Output Circuit at
Solenoid Connector.
Is the voltage above 10.0 volts?TRANSMISSION -
AUTOMATIC
3-SPD, 31TH
Ye s®Go To 3
No®Repair the open Fused Ignition Switch Output Circuit..
Perform Powertrain Verification Test VER-5A.
304
TRANSMISSION
ProCarManuals.com

TEST ACTION APPLICABILITY
3 Ignition Off
Disconnect the Powertrain Control Module.
Note: Check connectors - Clean/repair as necessary.
Key on.
With the voltmeter, probe the TCC Solenoid Control Circuit at the PCM connector.
Is the voltage above 10.0 volts?TRANSMISSION -
AUTOMATIC
3-SPD, 31TH
Ye s®Go To 4
No®Replace the TCC Solenoid.
Perform Powertrain Verification Test VER-5A.
4 Ignition Off
Disconnect the Powertrain Control Module Connector.
Disconnect the TCC Solenoid Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the TCC Solenoid Control Circuit from the TCC
Solenoid Connector to the PCM Connector.
Is the resistance below 5.0 ohms?TRANSMISSION -
AUTOMATIC
3-SPD, 31TH
Ye s®Go To 5
No®Repair the open TCC Solenoid Control Circuit.
Perform Powertrain Verification Test VER-5A.
5 Ignition Off
Disconnect the Powertrain Control Module Connector.
Disconnect the TCC Solenoid Connector.
Note: Check connectors - Clean/repair as necessary.
With the DRB in ohmmeter mode, measure between the TCC Solenoid Control
Circuit and ground.
Is the resistance below 5.0 ohms?TRANSMISSION -
AUTOMATIC
3-SPD, 31TH
Ye s®Repair the TCC Solenoid Control Circuit short to ground.
Perform Powertrain Verification Test VER-5A.
No®Go To 6
6 If there are no potential causes remaining, the PCM is assumed to be defective.
View repair options.TRANSMISSION -
AUTOMATIC
3-SPD, 31TH
Repair
Replace the Powertrain Control Module.
Perform Powertrain Verification Test VER-5A.
7 Ignition On, Engine Not Running
With the DRB, erase codes.
Turn ignition off for 10 seconds, then turn ignition on.
With the DRB actuate the TCC Solenoid.
With the DRB, read codes.
Wiggle Wiring Harness from the Solenoid to PCM.
Does the TCC Solenoid Control Circuit code return?TRANSMISSION -
AUTOMATIC
3-SPD, 31TH
Ye s®Repair as necessary where wiggling caused problem to appear.
Perform Powertrain Verification Test VER-5A.
No®Go To 8
305
TRANSMISSION
P-0743 TORQUE CONVERTER CLUTCH SOLENOID CIRCUIT ÐContinued
ProCarManuals.com

TEST ACTION APPLICABILITY
8 Ignition Off
Using the schematic as a guide, inspect the Wiring and Connectors.
Were any problems found?TRANSMISSION -
AUTOMATIC
3-SPD, 31TH
Ye s®Repair as necessary.
Perform Powertrain Verification Test VER-5A.
No®Test Complete.
306
TRANSMISSION
P-0743 TORQUE CONVERTER CLUTCH SOLENOID CIRCUIT ÐContinued
ProCarManuals.com

POWERTRAIN CONTROL MODULE C2 - GRAY 40 WAYCAV CIRCUIT FUNCTION
41 V37 18RD/LG SPEED CONTROL SWITCH SIGNAL
42 C18 18DB A/C PRESSURE SIGNAL
43 K4 18BK/LB SENSOR GROUND
44 K7 18OR 8V SUPPLY
45 - -
46 A14 18RD/WT FUSED B(+)
47 - -
48 K40 18BR/WT IDLE AIR CONTROL NO. 3 DRIVER
49 K60 18L/BK IDLE AIR CONTROL NO. 2 DRIVER
50 Z12 18BK/TN GROUND
51 K141 18TN/WT OXYGEN SENSOR 1/2 SIGNAL
52 - -
53 - -
54 - -
55 - -
56 V36 18TN.RD (EXCEPT
3.0L)SPEED CONTROL VACUUM SOLENOID CONTROL
57 K39 18GY/RD IDLE AIR CONTROL NO. 1 DRIVER
58 K59 18VT/BK IDLE AIR CONTROL NO. 4 DRIVER
59 D1 18VT/BR CCD BUS (+)
60 D2 18WT/BK CCD BUS (-)
61 K6 18VT/WT 5V SUPPLY
62 K29 18WT/PK BRAKE SWITCH SENSE
63 T10 18YL/DG (EATX) TORQUE MANAGEMENT REQUEST SENSE
64 C13 18DB/OR A/C COMPRESSOR CLUTCH RELAY CONTROL
65 D21 18PK SCI TRANSMIT
66 G7 18WT/OR VEHICLE SPEED SENSOR SIGNAL
67 K51 18DB/YL AUTOMATIC SHUT DOWN RELAY CONTROL
68 K52 18PK/BK DUTY CYCLE EVAP/PURGE SOLENOID CONTROL
69 - -
70 K70 18VT/RD (EXCEPT
3.0L)PULSE WIDTH MODULATED PURGE SENSE
71 - -
72 K107 18DB/WT (3.3L/3.8L) LEAK DETECTION PUMP SWITCH SENSE
72 K107 18YL/BK (2.4L ATX) LEAK DETECTION PUMP SWITCH SENSE
73 K173 14LG/DB RADIATOR FAN RELAY CONTROL
74 K31 18BR FUEL PUMP RELAY CONTROL
75 D20 18LG SCI RECEIVE
76 T41 18BK/WT (2.4L ATX) TRS T41 SENSE
76 T41 18BR/YL (EATX) TRS T41 SENSE
77 K106 18WT/DG (EXCEPT
3.0L)LEAK DETECTION PUMP SOLENOID CONTROL
78 K54 18OR/BK (2.4L ATX) TORQUE CONVERTER CLUTCH SOLENOID CONTROL
78 V36 18TN/RD (3.0L) SPEED CONTROL VACUUM SOLENOID CONTROL
79 - -
80 V35 18LG/RD SPEED CONTROL VENT SOLENOID CONTROL
RADIATOR FAN NO. 1 - BLACK 2 WAYCAV CIRCUIT FUNCTION
1 C23 12DG LOW SPEED RADIATOR FAN RELAY OUTPUT
2 Z1 12BK GROUND
C
O
N
N
E
C
T
O
R
P
I
N
O
U
T
S
350
CONNECTOR PINOUTS
ProCarManuals.com

THROTTLE POSITION SENSOR (EXCEPT 2.0L) - NATURAL 3 WAYCAV CIRCUIT FUNCTION
1 K4 18BK/LB SENSOR GROUND
2 K22 18OR/DB THROTTLE POSITION SENSOR SIGNAL
3 K6 18VT/WT 5V SUPPLY
TORQUE CONVERTER CLUTCH SOLENOID (ATX)-3WAYCAV CIRCUIT FUNCTION
1- -
2 F87 18WT/BK FUSED IGNITION SWITCH OUTPUT (ST-RUN)
3 K54 18OR/BK TORQUE CONVERTER CLUTCH SOLENOID CONTROL
C
O
N
N
E
C
T
O
R
P
I
N
O
U
T
S
352
CONNECTOR PINOUTS
ProCarManuals.com

TRANSMISSION CONTROL MODULE - BLACK 60 WAYCAV CIRCUIT FUNCTION
1 T1 18LG/BK TRS T1 SENSE
2- -
3 T3 18VT TRS T3 SENSE
4 D2 18WT/BK CCD BUS(-)
5- -
6 K24 18GY/BK CRANKSHAFT POSITION SENSOR SIGNAL
7 D21 18PK SCI TRANSMIT
8 F45 18YL/RD FUSED IGNITION SWITCH OUTPUT (START)
9 T9 18OR/BK OVERDRIVE PRESSURE SWITCH SENSE
10 T10 18YL/DG TORQUE MANAGEMENT REQUEST SENSE
11 F11 18RD/WT FUSED IGNITION SWITCH OUTPUT (ST-RUN-OFF)
12 K22 18OR/DB THROTTLE POSITION SENSOR SIGNAL
13 T13 18DB/BK SPEED SENSOR GROUND
14 T14 18LG/WT OUTPUT SPEED SENSOR SIGNAL
15 T15 18LG TRANSMISSION CONTROL RELAY CONTROL
16 T16 18RD TRANSMISSION CONTROL RELAY OUTPUT
17 T16 18RD TRANSMISSION CONTROL RELAY OUTPUT
18 - -
19 T19 18WT 2-4 SOLENOID CONTROL
20 T20 18LB LOW/REVERSE SOLENOID CONTROL
21 - -
22 - -
23 - -
24 - -
25 - -
26 - -
27 - -
28 - -
29 - -
30 - -
31 - -
32 - -
33 - -
34 - -
35 - -
36 - -
37 - -
38 - -
39 - -
40 - -
41 T41 18BK/WT TRS T41 SENSE
42 T42 18VT/WT TRS T42 SENSE
43 D1 18VT/BR CCD BUS (+)
44 - -
45 - -
46 D6 18BK/LB SCI RECEIVE
47 T47 18YL/BK 2-4 PRESSURE SWITCH SENSE
48 - -
49 - -
50 T50 18DG LOW/REVERSE PRESSURE SWITCH SENSE
51 K4 18BK/LB SENSOR GROUND
52 T52 18RD/BK INPUT SPEED SENSOR SIGNAL
53 Z14 16BK/YL GROUND
54 T54 18VT/LG TRANSMISSION TEMPERATURE SENSOR SIGNAL
55 T55 18OR/RD (3.3L/3.8L) AUTOSTICK/OVERDRIVE OFF MUX INPUT
56 A5 18RD/DB FUSED B(+)
57 Z13 16BK/RD GROUND
58 G7 18WT/OR VEHICLE SPEED SENSOR SIGNAL
59 T59 18PK UNDERDRIVE SOLENOID CONTROL
60 T60 18BR OVERDRIVE SOLENOID CONTROL
C
O
N
N
E
C
T
O
R
P
I
N
O
U
T
S
353
CONNECTOR PINOUTS
ProCarManuals.com