Suzuki GRAND VITARA User Manual

7B-17 Air Conditioning System:
Fail-Safe Table
S5JB0A7204031
When any of the following malfunctions (DTCs) is detected, HVAC control module enters fail-safe mode.
However, when HVAC control module detects normal operation of A/C system, fail-safe mode is canceled.
[A]: B1520 (15 – 1) (a): “REC” indicator flashing pattern
[B]: B1562 (1 – 4) (b): “FRE” indicator flashing pattern
[A]
(a)
(b)
[B]
(a)
(b)
I5JB0A720019-02
DTC No. Trouble Area
Fail-Safe Operation
When ignition switch is turned
ON after malfunction is already
detected
When malfunction is detected
during ignition switch is ON
) B1502
Inside air temperature
sensor and/or its circuit
malfunction
HVAC control module controls actuators assuming that inside air
temperature is 25 °C (77 °F).
) B1503
Evaporator temperature
sensor and/or its circuit
malefaction
HVAC control module controls actuators assuming that amount of
evaporator temperature is –6 °C (21.2 °F).
) B1504
Sunload sensor and/or its
circuit malfunction
HVAC control module controls actuators assuming that amount of sunlight is
0 W/m
2
.
) B1511
Temperature control
actuator (position sensor)
and/or its circuit malfunction
Circuit open: Temperature control actuator fixed to “MAX HOT” position.
Circuit short: Temperature control actuator fixed to “MAX COOL” position.
) B1512
Air flow control actuator
(position sensor) and/or its
circuit malfunction
Circuit open: Air flow control actuator fixed to “DEF” position.
Circuit short: Air flow control actuator fixed to “VENT” position.
) B1513
Temperature control
actuator and/or its circuit
malfunction
Stop the operation of temperature control actuator.
) B1514
Air flow control actuator
and/or its circuit malfunction
Stop the operation of Air flow control actuator.
) B1520
Temperature selector
malfunction
HVAC control module keeps
condition just before malfunction is
detected.
HVAC control module controls
actuators assuming that setting of
temperature selector is 23 °C (73.4
°F).
) B1521
Blower speed selector
malfunction
HVAC control module keeps
condition just before malfunction is
detected.
HVAC control module controls
actuators assuming that as follows.
• Blower speed is minimum.
• Air flow control actuator fixed to
“DEF” position.
) B1530
Air intake control actuator
(position sensor) and/or its
circuit malfunction
Circuit open: Air intake control actuator fixed to “FRE” position.
Circuit short: Air intake control actuator fixed to “REC” position.
) B1531
Air intake control actuator
and/or its circuit malfunction
Stop the operation of temperature control actuator.

Suzuki GRAND VITARA Specifications

General

Brand	Suzuki
Model	GRAND VITARA
Category	Automobile
Language	English