Honda ACCORD HYBRID 2005 Service Manual page 1822

Keyless/Power Door Locks/Security System
D T C T r o u b l e s h o o t i n g
DTC B1026: Passenger's Door Lock Switch
Signal Error
1. Clear the DTCs using the HDS.
2. Cycle the ignition switch to OFF and then back O N .
3. Operate the passenger's door lock switch in the
LOCK and UNLOCK positions for 2 seconds.
4. Check for DTCs using the HDS.
Is DTC B1026 indicated?
YES—Go to step 5.
NO—Intermittent failure. The passenger's door lock
system is OK at this t i m e . Check pinfits and
connections. •
5. W i t h the door lock in UNLOCK position, select
SECURITY f r o m the HDS and enter the DATA LIST.
6. Check the ON/OFF i n f o r m a t i o n of the Front Psnger's
Door Lock Sw. (LOCK) and Front Psnger's Door
Lock Sw. (UNLOCK) in the DATA LIST.
Are both information indicators OFF?
YES—Go to step 7.
NO—Go to step 9.
7. Make sure the ON/OFF i n f o r m a t i o n of the Front
Psnger's Door Lock Sw. (LOCK) and Front Psnger's
Door Lock Sw. (UNLOCK) are changed w h e n the
passenger's door lock switch is in the LOCK and
UNLOCK positions.
Does the information show the correct ON and
OFF indications when the door lock switch in the
LOCK and UNLOCK positions?
YES—Faulty MICU; replace i t . B
N O — G o t o step 8.
8. Check for a short between the door lock switch
LOCK and UNLOCK wires.
Are the wire harnesses OK?
YES—Faulty passenger's door lock switch; replace
i t . B
NO—A short in the w i r e , repair and recheck.H
9. Remove the passenger's inner handle (see page
20-7).
10. Disconnect the 3P connector f r o m the passenger's
door lock switch.
11. Check the ON/OFF i n f o r m a t i o n of the Front Psnger's
Door Lock Sw. (LOCK) and Front Psnger's Door
Lock Sw. (UNLOCK) in the DATA LIST.
Are both information indicators OFF?
YES—Faulty passenger's door lock s w i t c h ; replace
i t . B
N O — G o t o step 12.
12. Check for a short in the w i r e between the MICU and
passenger's door lock switch at the security alarm/
keyless door lock system control unit input test
(see page 22-134).
Are the wire harnesses OK?
YES—Faulty MICU; replace i t . H
N O — A short in the w i r e , repair and recheck. •
22-140