Reference Values
TERMINAL LAYOUT

PHYSICAL VALUES



Bose speaker AMP
Wiring diagramB257B, B257C ambient sensor
Description
COMPONENT DESCRIPTION
Ambient Sensor
The ambient sensor (1) is installed to the front bumper
reinforcement.
It detects ambient temperature and converts it into a resistance
value which is then input into the A/C auto amp.
Ambient Sensor Circuit
AMBIENT TEMPERATUR ...
Diagnosis system (IPDM E/R)
Diagnosis Description
AUTO ACTIVE TEST
Description
In auto active test mode, the IPDM E/R sends a drive signal to the following
systems to check their operation.
Oil pressure warning lamp
Front wiper (LO, HI)
Parking lamps
Side marker lamps
License plate lamps
Tail lamps
Front f ...
Cooling and/or dehumidified heating
(AUTO)
This mode may be used all year round as the
system automatically works to keep a constant
temperature. Air flow distribution and fan speed
are also controlled automatically.
1. Press the AUTO button on.
2. Turn the temperature control dial to the left
or right to set the desired temperatur ...