Honda ACCORD HYBRID 2005 Service Manual page 779

DTC P1575 (12): Motor Power Inverter (MPI)
Module Voltage Malfunction
NOTE: If the battery module switch is turned OFF and
the ignition switch is ON (II), DTC PI575 may be
detected.
1. Turn the ignition switch ON (II).
2. Check for Temporary DTCs or DTCs w i t h the HDS.
Is DTC P1445 indicated?
YES—Do the troubleshooting for DTC P1445
(see page 12-88).
N O — G o t o step 3.
3. Start the engine, then wait 1 minute.
4. Check the MPI VOLTAGE, TOTAL VOLTAGE IMA
BATT. MDLS in the DATA LIST w i t h the HDS.
Is there more than 9 V difference between MPI
VOLTAGE and TOTAL VOLTAGE IMA BATT.
MDLS?
Y E S — G o t o step 9.
NO — G o t o step 5.
5. Clear the DTC w i t h the HDS.
6. Check the SOC in the DATA LIST w i t h the HDS.
7. Start the engine, and hold it between 3,500 r p m
and 4,000 rpm w i t h o u t load (in Park or neutral) until
the SOC increases 70 %.
8. Check for T e m p o r a r y DTCs or DTCs w i t h the HDS.
Is DTC P1575 indicated?
YES—Go to step 25.
NO—Intermittent failure, system is OK at this t i m e .
Check for poor connections or loose terminals at
the MPI m o d u l e , the high voltage contactor, and
the M C M . B
9. Note the value of MPI VOLTAGE in the DATA LIST
w i t h the HDS.
10. Compare the MPI VOLTAGE and the TOTAL
VOLTAGE IMA BATT. MDLS in the DATA LIST w i t h
the HDS.
Did MPI VOLTAGE change 9 V or less?
Y E S — G o t o step 11.
NO—Go to step 2 1 .
11. Turn the ignition switch OFF.
12. Turn the battery m o d u l e switch OFF (see page 12-4).
13. Remove the IPU lid (see page 12-140).
14. Check the high voltage cable (orange cable)
connection and busbar connection on the junction
board.
Is the connection OK?
Y E S — G o t o step 15.
NO—Repair connection in the cable, then go to
step 29.
15. Disconnect the high voltage contactor 2P connector.
16. At the contactor side, check for continuity between
high voltage contactor 2P connector terminals
No. 1 and No. 2.
Terminal side of
male terminals
Is there continuity?
Y E S — G o t o step 17.
NO—Replace the high voltage contactor (see page
12-142), then go to step 29.
(cont'd)
12-101