Honda CR-V 1997 Service Manual page 598

Electrical Troubleshooting ('97 Model)
Troubleshooting Flowchart - Lock-up Control System
• OBO II
Scan
Tool indicot .. Code
POWI.
• Self-diagnosis
fi!!)
indicator light
Indicates Code 40.
Check and record the freeze data
in case it is needed later for prob-
lem verification
Check for Anoth.,.. Code:
Check whether the OBO II sca n
tool or the
[Q!J
indicator light
indicates another code.
Does the OBD II scan tool or
the
[Q!]
indicator light indicate
another code?
NO'
Test line Pressure:
Measure the lin e
pressure (se e
page 14· 161 and 14· 162).
Is the line pressu re within the
service lim it?
YES
Test 1st. 2nd. 3rd, and 4th Clutch
Pressure:
Measure the 1st, 2nd, 3rd, and 4th
clutch pressure (see page 14-161
thru 14· 163).
Is each clutch pressure within
the service limit?
YES
To page 14-83
14-82
YES
NO
I
NO
Possible Cause
Faulty
lock-up
control system
Perform the Troubleshooting
Flowchart for the indicated
Codels). Recheck for code POUO
(401
after
troubleshooting.
NOTE: Do not cont in ue with this traubl eshooting until the causes of any other
DTCs have been corrected .
Ii
Even if you cannot re produce code P07 40, test the line pressure, test the clutch
lock-up control solenoid valve assembly. pressures, Clnd if necessary. replace the
Repair the hydraulic system as
I
necessary (see page 14·162).
Repair the hydraulic system as
necassary (.ee page 14-162 and
14-163).