Honda 2004 Odyssey Service Manual page 939

Automatic Transmission
DTC Troubleshooting (cont'd)
DTC P0743: Problem in Torque Converter
Clutch Solenoid Valve Circuit
NOTE:
• Record all freeze data and review General
Troubleshooting Information (see page 14-247)
before you troubleshoot.
• This code is caused by an electrical circuit problem
and cannot be caused by a mechanical problem in the
transmission.
1. Turn the ignition switch OFF.
2. Disconnect PCM connectors B (25P) and D (16P).
3. Turn the ignition switch ON (II).
4. Measure the voltage between PCM connector
terminals D1 and B20 or B22.
PCM CONNECTORS
B (25P)
LG1 (BRN/YEL) LG2 (BRN/YEL)
Wire side of female terminals
Is there voltage?
YES Repair short to power in the wire between
PCM connector terminal D1 and the torque
converter clutch solenoid valve.
NO Go to step 5.
14-326
LC (YEL)
D (16P)
5. Turn the ignition switch OFF.
6. Measure the resistance between PCM connector
terminals D1 and B20 or B22.
PCM CONNECTORS
B (25P)
LG1 (BRN/YEL) LG2 (BRN/YEL)
Wire side of female terminals
Is the resistance 12 25
YES Go to step 11.
NO Go to step 7.
7. Check for continuity between PCM connector
terminals B20 and body ground, and between B22
and body ground.
PCM CONNECTOR B (25P)
LG1 (BRN/YEL)
Wire side of female terminals
Is there continuity?
YES Go to step 8.
NO Repair open in the wires between PCM
connector terminals B20, B22, and ground (G101),
or repair poor ground (G101).
LC (YEL)
D (16P)
?
LG2 (BRN/YEL)