Honda 2004 Odyssey Service Manual page 694

1999-2000 Models
DTC P1705: Short in A/T Gear Position Switch
Circuit
NOTE:
• Record all freeze data and review General
Troubleshooting Information (see page 14-3) 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 ON (II).
2. Observe the A/T gear position indicator, and shift
each position separately.
Do any indicators stay on when the shif t lever is
not in that position?
YES Go to step 3.
NO The system is OK at this time. Check the wire
harness for damage.
3. Disconnect the A/T gear position switch connector.
Do all gear position indicators go out?
YES Replace the A/T gear position switch (see
page 14-174).
NO Go to step 4.
4. Turn the ignition switch OFF, and connect the A/T
gear position switch connector.
5. Turn the ignition switch ON (II).
6. Shift to all positions other than R.
7. Measure the voltage between the D6 and B20 or
B22 terminals.
PCM CONNECTORS
B (25P)
LG2 (BRN/BLK)
LG1 (BRN/BLK)
Wire side of female terminals
D (16P)
ATP R (WHT)
Is there battery voltage?
YES Go to step 8.
NO Check for a short in the wire between the D6
terminal and the A/T gear position switch or A/T
gear position indicator, and check for an open in
the wires between the B20 and B22 terminals and
body ground (G101). If wires are OK, check for
loose terminal fit in the PCM connectors. If
necessary, substitute a known-good PCM and
recheck.
8. Shift to all positions other than P or N.
9. Measure the voltage between the B14 and B20 or
B22 terminals.
PCM CONNECTOR B (25P)
LG2 (BRN/BLK)
LG1 (BRN/BLK)
Wire side of female terminals
Is there about 5 V ?
YES Go to step 10.
NO Check for a short in the wire between the B14
terminal and the A/T gear position switch, and in
the P and N position signal wires between the A/T
gear position indicator and the A/T gear position
switch. If wires are OK, check for loose terminal fit
in the PCM connectors. If necessary, substitute a
known-good PCM and recheck.
10. Shift to all positions other than D4.
ATP NP (BLU/WHT)
(cont'd)
14-81