Honda Civic 2002-2003 Service Manual page 997

Immobilizer System
Troubleshooting (cont'd)
8. Check for voltage between the immobilizer control
unit-receiver
7P
connector No.6 terminal and No.1
terminal.
Is there battery voltage?
YES-Go to step 12.
NO-Check for these problems:
• Open on the BRN/YEL wire .•
• Faulty ECM .•
9. Remove the driver's dashboard lower cover (see
page 20-59).
10. Remove the steering column lower cover (see page
17-9).
11. Disconnect the 7P connector (A) from the
immobilizer control unit-receiver (B).
22-166
12. Check for continuity between the immobilizer
control unit-receiver 7P connector No.2 terminal
and ECM terminal E27.
Is there continuity?
YES-Go to step 13.
NO-Repairthe open in the RED/BLU wire .•
13. Reconnect the 7P connector to the immobilizer
control unit-receiver.
14. Check for voltage between the immobilizer control
unit-receiver 7P connector No.4 terminal and body
ground with the parking brake lever pulled, then
released.
Is there 1 V or less, then 5 V or more?
YES-Replace the immobilizer control
unit-receiver.
After replacing the immobilizer control unit-
receiver, rewrite the unit with a Honda PGM
Tester. •
NO-Check for these problems:
Faulty parking brake switch or a poor body
ground of the parking brake switch .•
Repair short or open in the GRN/ORN wire .•