Honda 2004 Odyssey Service Manual page 949

Automatic Transmission
DTC Troubleshooting (cont'd)
DTC P0778: Problem in A/T Clutch Pressure
Control Solenoid Valve B 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. Disconnect the 2P connector from A/T clutch
pressure control solenoid valve B.
2. Measure A/T clutch pressure control solenoid
resistance at the solenoid valve connector.
A/T CLUTCH PRESSURE CONTROL
SOLENOID VALVE B CONNECTOR
Terminal side of male terminals
Is the resistance 3 10
YES Go to step 3.
NO Replace the A/T clutch pressure control
solenoid valve B (see page 14-361).
14-336
?
3. Disconnect PCM connector B (25P).
4. Check for continuity between PCM connector
terminals B18 and body ground, and between B25
and body ground.
PCM CONNECTOR B (25P)
LS B (BRN/WHT)
Wire side of female terminals
Is there continuity?
YES Repair short to ground in the wires between
PCM connector terminals B18 and B25, and A/T
clutch pressure control solenoid valve B.
NO Go to step 5.
5. Connect the A/T clutch pressure solenoid valve B
connector.
6. Measure the resistance between PCM connector
terminals B18 and B25.
PCM CONNECTOR B (25P)
LS B (BRN/WHT)
Wire side of female terminals
Is the resistance 3 10
YES Go to step 7.
NO Repair loose terminal or open in the wires
between PCM connector terminals B18 and B25,
and A/T clutch pressure control solenoid valve B.
LS B (GRN)
LS B (GRN)
?