Honda ACCORD HYBRID 2005 Service Manual page 369

DTC P0557: Brake Booster Pressure Sensor
Circuit Low Voltage
1. Turn the ignition switch ON (II).
2. Check the BBP SENSOR in the DATA LIST w i t h the
HDS.
Is there about 0.23 V or less?
Y E S — G o to step 3.
NO—Intermittent failure, system is OK at this time.
Check for poor connections or loose terminals at
the brake booster pressure sensor and the P C M . B
3. Turn the ignition switch OFF.
4. Disconnect the brake booster pressure sensor 3P
connector.
5. Turn the ignition switch ON (II).
6. Check the BBP SENSOR in the DATA LIST w i t h the
HDS.
Is there about 0.23 V or less?
Y E S — G o t o step 9.
NO — G o t o step 7.
7. Measure voltage between brake booster pressure
sensor 3P connector t e r m i n a l s No. 1 and No. 2.
BRAKE B O O S T E R P R E S S U R E S E N S O R 3P C O N N E C T O R
V C C 2 ( Y E L / G R N ) S G 2 (GRN/BLK)
W i r e side of f e m a l e t e r m i n a l s
Is there about 5 V?
Y E S — G o to step 13.
N O — G o t o step 8.
8. Measure voltage between PCM connector
terminals C12 and C13.
PCM C O N N E C T O R C (22P)
S G 2 (GRN/YEL)
16 17
10 11
19
12
20
V C C 2 ( Y E L / B L U )
13 14
21
15
22
W i r e side of f e m a l e t e r m i n a l s
Is there about 5 V?
Y E S — R e p a i r open in the w i r e between the PCM
(C13) and the brake booster pressure sensor, then
go to step 15.
N O — G o t o step 20.
(cont'd)
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