Toyota Corolla Cross: Power Integration System
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PRECAUTION
PRECAUTION FOR POWER DISTRIBUTION BOX ASSEMBLY
(a) Do not remove or install the power distribution box assembly with the negative
(-) auxiliary battery terminal connected.
NOTICE:
PARTS LOCATION
ILLUSTRATION
*1
for HEV Model
-
-
*3
NO. 1 ENGINE ROOM RELAY BLOCK
- INP STD NO. 1
- INP STD NO. 2
-
SEE MORE:
DESCRIPTION The HV battery is composed of 60 cells (3.7 V each) in series. The battery ECU assembly monitors the internal resistance of each HV battery cell to detect malfunctions of the HV battery.
DTC No. Detection Item
DTC Detection Condition
Trouble Area MIL
Warning
MONITOR DESCRIPTION The ECM uses air fuel ratio sensors mounted in front of and behind the Three-Way Catalytic Converter (TWC) to monitor its efficiency.
The first sensor, the air fuel ratio sensor (sensor 1), sends pre-catalyst information to the ECM. The second sensor, the air fuel ratio sensor
