Vtc Phase Gap - Honda Civic 2002-2003 Service Manual

VTEC/VTC
DTe Troubleshooting (cont'd)
10. Measure voltage between ECM connector terminal
A25 and body ground.
ECM CONNECTOR A 131P)
1 2 3 4 5 6 7 9
=
Wire side of female terminals
Is there about 5 V?
YES-Repair open in the wire between the ECM
IA251 and CMP sensor A..
NO-Go to step 11.
11. Turn the ignition switch OFF.
12. Disconnect ECM connector A 131PI.
13. Check for continuity between ECM connector
terminal A25 and body ground.
ECM CONNECTOR A 131P)
1 2 3
10 11 12
222324
=
Wire side of female terminals
Is there continuity?
YES-Repair short in the wire between the ECM
IA251 and the CMP sensor A .•
NO-Update the ECM if it does not have the latest
software, or substitute a known-good ECM, then
recheck (see page 11-61. If the symptom/indication
goes away with a known-good ECM, replace the
original ECM .•
11-122
Ole P0341:
VTC Phase Gap
1. Reset the ECM (see page 11-41.
2. Start the engine.
Is OTC P0341 indicated?
YES-Go to step 3.
NO-Intermittent failure, system is OK at this time.
Check for poor connections or loose terminals at
the CMP sensor A and at the ECM .•
3. Check the VTC oil control solenoid valve (see page
11-127).
Is the VTC oil control solenoid valve OK?
YES-Go to step 4.
NO-Clean the VTC oil control solenoid valve, or
replace it (see page 11-1271 .•
4. Remove the head cover, and check the cam chain
(see page 6-121.
Is the cam chain OK?
YES-Go to step 5.
NO-Replace the cam chain Isee page 6-121 .•
5. Check the VTC actuator Isee page 6-81.
Is the VTC actuator OK?
YES- Update the ECM if it does not have the latest
software, or substitute a known-good ECM, then
recheck Isee page 11-61. If the symptom/indication
goes away with a known-good ECM, replace the
original ECM .•
NO- Replace the VTC actuator .•
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