Honda Accord: MICU Input Test
NOTE; Before testing, troubleshoot the multiplex integrated control unit first, using B-CAN System Diagnosis Test Mode A (see page 22-134).
Drivers MICU
1. Turn the ignition switch to LOCK (0), and remove the driver's dashboard lower cover (see page 20-166).
2. Disconnect driver's under-dash fuse/relay box connectors F, Q, and R.
NOTE; AH connector views are wire side of female terminals.
CONNECTOR F (33P)
CONNECTOR Q (20P)
CONNECTOR R (24P)
*: A/T
3. Inspect the connector and socket terminals to be sure they are all making good contact.
• If the terminals are bent, loose or corroded, repair them as necessary and recheck the system.
• If the terminals look OK, go to step 4.
4. With the connectors still disconnected, do these input tests at the following connectors.
• If any test indicates a problem, find and correct the cause, then recheck the system.
• If all the input tests prove OK, go to step 5.
5. Reconnect the connectors to the driver's under-dash fuse/relay box, turn the ignition switch to ON ( I I ) , and do these input tests at the following connectors.
• If any test indicates a problem, find and correct the cause, then recheck the system.
• If all the input tests prove OK, goto step 6.
Passenger's MICU
6. Turn the ignition switch to LOCK (0), and remove the passenger's kick panel.
• 2-door (see page 20-105) • 4-door (see page 20-107)
7. Disconnect passenger's under-dash fuse/relay box connectors A, E, G# 1 and H*2.
*1: LX, LX PZEV, LX-P, LX-P PZEV
*2: Except LX, LX PZEV, LX-P, LX-P PZEV
NOTE: AH connector views are wire side of female terminals.
CONNECTOR A (33P)
CONNECTOR E (18P)
CONNECTOR G(16P) (LX, LX PZEV, LX-P, LX-P PZEV)
CONNECTOR H (38P) (Except LX, LX PZEV, LX-P)
*: '08-09 models
8. With the connectors still disconnected, make these input tests at the connectors.
• If any test indicates a problem, find and correct the cause, then recheck the system.
• If all the input tests prove OK, go to step 9.
9. Reconnect the connectors to the passenger's under-dash fuse/relay box, and do these input tests at the following connectors.
• If any test indicates a problem, find and correct the cause, then recheck the system.
• If all the input tests prove OK, Go to step 10.
* 1 : '08-09 models
*2: LX, LX PZEV, LX-P, LX-P PZEV
*3: Except LX, LX PZEV, LX-P, LX-P PZEV
10. If multiple failures are found on more than one control unit, replace the driver's under-dash fuse/relay box (includes the driver's MICU).
• USA models (see page 22-86) • Canada models (see page 22-87) If input failures are related to a particular control unit, replace the control unit.
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