Honda ACCORD HYBRID 2005 Service Manual page 691

MCM Inputs and Outputs at Connector B (24P)
1
TBATT1
3
PG1
5
LG1
6
IG1
7
IGA1
8
TBATT
2
9
TBATT
3
11
F A N
CNTL
12
PRE
13
CNT
14
IG
HLD2
15
IGHLD
17
K-LINE
18
DVA
19
DVB
20
N F A N
21
MOT
NEP
22
SCS
23
WEN
24
VBU
Wire side of female t e r m i n a l s
NOTE: Standard battery voltage is 12 V.
Terminal
number
Wire color Terminal name
Description Signal
1 YEL TBATT 1 (BATTERY 1
TEMPERATURE)
Battery module TBATT 1
temperature signal 1 input
With ignition switch ON (II): about 0.5—4.5 V
(depending on battery module temperature)
3 BLK PG1 (POWER GROUND) Ground for the MCM Less than 0.1 V at all times
5 BRN/YEL LG1 (LOGIC GROUND) Ground for the MCM Less than 0.1 V at all times
6 YEL IG1 MCM power
With ignition switch ON (II): battery voltage
With ignition switch OFF: about 0 V
7 RED/BLU IGA1 (IGNITION FOR
ASSIST SYSTEM)
Power source for MCM
control circuit
With ignition switch ON (II): battery voltage
With ignition switch OFF: battery voltage for several
seconds, then 0 V
8 GRY TBATT2 (BATTERY 2
TEMPERATURE)
Battery module TBATT 2
temperature signal 2 input
With ignition switch ON (II): about 0.5—4.5 V
(depending on battery module temperature)
9 WHT TBATT3 (BATTERY 3
TEMPERATURE)
Battery module TBATT 3
temperature signal 3 input
With ignition switch ON (II): about 0.5—4.5 V
(depending on battery module temperature)
11 BLK FANCTL (FAN CONTROL)
IPU module fan speed
control signal output
IPU module fan OFF: about 5 V
IPU module fan ON: duty controlled
12 RED PRE (PRE CHARGE
CONTACTOR)
Drives bypass contactor
momentarily (after that
about 0 V)
With ignition switch ON (II): about 0 V
13 BLU CNT (CONTACTOR) Drives high voltage
contactor
With ignition switch ON (II): battery voltage
14 WHT IGHLD2 (IGNITION HOLD 2) Drives MCM relay 2 With ignition switched from ON (II) to OFF:
about 0 V for several seconds
15 WHT/RED IGHLD (IGNITION HOLD) Drives MCM relay 1
With ignition switched from ON (II) to OFF:
0— 1 V for several seconds, then battery voltage
17 BLU K-LINE Communication signal with
HDS
With ignition switch ON (II): battery voltage
18 GRN/BLK DVA (DC-DC CONVERTER
SIGNALA)
Communication signal with
DC-DC converter
With ignition switch ON (II): pulses
19 YEIVBLU DVB (DC-DC CONVERTER
SIGNAL B)
Communication signal with
DC-DC converter
With ignition switch ON (II): pulses
20 WHT NFAN (FAN CONTROL) Drives IPU module fan With ignition switch ON (II): about 5 V
IPU module fan ON: duty controlled
21 LTGRN MOTNEP With engine running: pulses
22 BRN SCS (SERVICE CHECK
SIGNAL)
Service check connector
signal output
With terminal connected: about 0 V
With terminal disconnected: about 5 V
23 RED/WHT WEN (WRITE ENABLE
SIGNAL)
Write enable signal input With ignition switch ON (II): about 0 V
24 WHT/RED VBU (VOLTAGE BACK UP) Power source for MCM
control circuit
Power source for DTC
memory
Battery voltage at all times
(cont'd)
12-13