Fuse box
2-11
Fuse box
This model is fitted with a newly developed fuse box which is an assembly part containing various inte-
grated relays. With this new fuse box, the number of parts has been reduced and the serviceability has
been improved. The fuse type has also been changed. This new fuse
is not compatible with the previ-
ous one.
A self-diagnosis function to detect malfunctions in each relay (power supply circuit)
has been added to
the engine ECM because it is not possible to remove built-in relays individually for testing. When a mal-
function occurs, the Check Engine icon is displayed
on a multifunction display and a trouble code is
detected.
Self-diagnosis of power supply circuit
The engine ECM monitors the voltage after a relay is turned on and determines whether the relay func-
tions properly in accordance with the relay activation request.
50
50
30
20
20
1 2
1. Fuse (50 A)
2. Fuse (20 A–30 A)
P
P
2. Engine
ECM
2. Engine
ECM
B
A
3. Relay
3. Relay
4. Faulty
1. Good
1. Good
2. Engine ECM
3. Relay
4. Faulty
A. Request
B. Determination
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