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Suzuki Grand Vitara JB416 / JB420. Manual - part 291

7B-55 Air Conditioning System:

DTC B1556: Camshaft Position (CMP) Sensor and/or Its Circuit Malfunction

S5JB0A7204046

DTC Detecting Condition and Trouble Area

DTC Troubleshooting

DTC B1557: Wheel Speed Sensor and/or Its Circuit Malfunction

S5JB0A7204047

DTC Detecting Condition and Trouble Area

DTC Troubleshooting

DTC B1561: Engine Coolant Temperature Sensor and/or Its Circuit Malfunction

S5JB0A7204048

DTC Detecting Condition and Trouble Area

DTC Troubleshooting

DTC detecting condition

Trouble area

HVAC control module receives error code from BCM continuously.

• CMP sensor circuit
• CMP sensor
• HVAC control module

Step

Action

Yes

DTC check
1) Connect scan tool to DLC with ignition switch turned

OFF.

2) Check ECM for DTC.

Is there DTC P0340?

Go to applicable DTC
diag. flow.

Substitute a known-
good HVAC control
module and recheck.

DTC detecting condition

Trouble area

HVAC control module receives error code from BCM continuously.

• Wheel speed sensor circuit
• ABS control module
• Wheel speed sensor
• HVAC control module

Step

Action

Yes

DTC check
1) Connect scan tool to DLC with ignition switch turned

OFF.

2) Check ABS for DTC.

Is there DTC C1021, C1022 / C1025, C1026 / C1031,
C1032 / C1035, C1036?

Go to applicable DTC
diag. flow.

Substitute a known-
good HVAC control
module and recheck.

DTC detecting condition

Trouble area

HVAC control module receives error code from BCM continuously.

• ECT sensor circuit
• ECT sensor
• HVAC control module

Step

Action

Yes

DTC check
1) Connect scan tool to DLC with ignition switch turned

OFF.

2) Check ECM for DTC.

Are there DTC P0116, P0117 or P0118?

Go to applicable DTC
diag. flow.

Substitute a known-
good HVAC control
module and recheck.

Air Conditioning System: 7B-56

DTC B1562: Outside Air Temperature Sensor and/or Its Circuit Malfunction

S5JB0A7204049

DTC Detecting Condition and Trouble Area

DTC Troubleshooting

DTC B1563: A/C Refrigerant Pressure Sensor and/or Its Circuit Malfunction

S5JB0A7204050

DTC Detecting Condition and Trouble Area

DTC Troubleshooting

HVAC Control Module and Its Circuits Inspection

S5JB0A7204052

CAUTION

HVAC control module can not be checked by itself.
It is strictly prohibited to connect voltmeter to HVAC control module with couplers disconnected from
it.

HVAC control module and its circuits can be checked at HVAC control module wiring couplers by measuring voltage.

Voltage Check

1) Remove HVAC control module. Refer to “HVAC Control Module Removal and Installation in Section 7A”.
2) Connect HVAC control module and body control module couplers to HVAC control module and body control

module.

3) Check each terminal voltage with couplers connected by referring to “HVAC Control Module Voltage Table: ”.

Terminal arrangement of HVAC control module (viewed from harness side)

DTC detecting condition

Trouble area

HVAC control module receives error code from BCM continuously.

• Outside air temperature sensor

circuit

• Outside air temperature sensor
• HVAC control module

Step

Action

Yes

DTC check
1) Connect scan tool to DLC with ignition switch turned

OFF.

2) Check BCM for DTC.

Are there DTC B1141, B1142 or B1143?

Go to applicable DTC
diag. flow.

Substitute a known-
good HVAC control
module and recheck.

DTC detecting condition

Trouble area

HVAC control module receives error code from BCM continuously.

• A/C refrigerant pressure sensor

circuit

• A/C refrigerant pressure sensor
• HVAC control module

Step

Action

Yes

DTC check
1) Connect scan tool to DLC with ignition switch turned

OFF.

2) Check ECM for DTC.

Are there DTC P0532 or P0533?

Go to applicable DTC
diag. flow.

Substitute a known-
good HVAC control
module and recheck.

16 15 14 13 12 11 10

32 31 30 29 28 27

23 22 21 20 19 18 17

I5JB0A720030-02

7B-57 Air Conditioning System:

HVAC Control Module Voltage Table

Terminal

Wire

color

Circuit

Normal value

Condition

G52-1

PPL/RED Power supply

10 – 14 V

Ignition switch turned ON.

G52-2

WHT

Electric power source
for back-up

10 – 14 V

Constantly.

G52-3

PPL/WHT

Serial communication
line of data link
connector

10 – 14 V

Ignition switch turned ON.

G52-4

RED/YEL Illumination switch

0 – 1 V

Ignition switch turned ON, lighting switch OFF
position.

10 – 14 V

Ignition switch turned ON, lighting switch ON
position.

G52-5

RED/GRN Illumination ground

0 – 1 V

Constantly.

G52-6

PNK/BLK Theft deterrent light

—

G52-8

BLK/RED

Rear defogger driving
signal

10 – 14 V

Ignition switch turned ON, rear defogger switch ON.

0 – 1 V

Ignition switch turned ON, rear defogger switch OFF.

G52-10 YEL/RED

Serial communication
line from BCM

Refer to “Inspection of BCM and its Circuits in Section 10B”.

G52-11 PNK/GRN

Serial communication
line to BCM

Refer to “Reference waveform No. 1: ”.

G52-12

YEL

Ground for sunload
sensor

0 – 1 V

Constantly.

G52-13 BLK/RED Ground for sensors

0 – 1 V

Constantly.

G52-14 RED/WHT

Output of 5 V power
source for position
sensor of actuators

4 – 6 V

Ignition switch turned ON.

G52-15 RED/BLK

Blower motor control
voltage feedback

Approx. 12 V

Ignition switch turned ON, blower speed selector
OFF.

Approx. 8 V

Ignition switch turned ON, blower speed selector 1st
position.

Approx. 7 V

Ignition switch turned ON, blower speed selector 2nd
position.

Approx. 5.5 V

Ignition switch turned ON, blower speed selector 3rd
position.

Approx. 4.5 V

Ignition switch turned ON, blower speed selector 4th
position.

Approx. 3 V

Ignition switch turned ON, blower speed selector 5th
position.

Approx. 1.3 V

Ignition switch turned ON, blower speed selector 6th
position.

Approx. 0.3 V

Ignition switch turned ON, blower speed selector 7th
position.

Less than 0.3 V

Ignition switch turned ON, blower speed selector 8th
position.

G52-16 PPL/GRN Blower motor controller

0 – 1 V

Ignition switch turned ON, blower speed selector
OFF.

Approx. 4.2 V

Ignition switch turned ON, blower speed selector 1st
– 7th position.

Approx. 5.7 V

Ignition switch turned ON, blower speed selector 8th
position.

G52-17

BLK

Ground for HVAC
control module

0 – 1 V

Constantly.

G52-18

PNK

Sunload sensor signal

Approx. 3 V

Ignition switch turned ON, amount of insolation is
500 W/m

Approx. 5 V

Ignition switch turned ON, amount of insolation is 0
W/m

Air Conditioning System: 7B-58

G52-19 WHT/BLK

Evaporator
temperature sensor
signal

Approx. 3.6 V

Ignition switch turned ON, evaporator temperature 0

°C (32 °F).

Approx. 3.4 V

Ignition switch turned ON, evaporator temperature
10

°C (50 °F).

Approx. 2.4 V

Ignition switch turned ON, evaporator temperature
25

°C (77 °F).

G52-20 BLU/BLK

Inside air temperature
sensor signal

Approx. 2.4 V

Ignition switch turned ON, room temperature 25

°C

(77

°F).

Approx. 3.8 V

Ignition switch turned ON, room temperature 0

°C

(32

°F).

G52-21 WHT/RED

Temperature control
actuator position
sensor signal

Approx. 4.5 V

Ignition switch turned ON, temperature selector MAX
COOL position.

Approx. 1.5 V

Ignition switch turned ON, temperature selector MAX
HOT position.

G52-22 WHT/GRN

Air intake control
actuator position
sensor signal

Approx. 3.8 V

Ignition switch turned ON, air intake selector “REC”
position.

Approx. 1.5 V

Ignition switch turned ON, air intake selector “FRE”
position.

G52-23 WHT/BLU

Air flow control actuator
position sensor signal

Approx. 4.2V

Ignition switch turned ON, air flow selector “VENT”
position.

Approx. 3.2 V

Ignition switch turned ON, air flow selector “BI-
LEVEL” position

Approx. 2 V

Ignition switch turned ON, air flow selector “FOOT”
position.

Approx. 1.5 V

Ignition switch turned ON, air flow selector “DEF /
FOOT” position.

Approx. 0.6 V

Ignition switch turned ON, air flow selector “DEF”
position.

G52-27

GRY

Temperature control
actuator (COOL)

10 – 14 V

Ignition switch turned ON, temperature control
actuator is working in operation from HOT to COOL
position.

0 – 1 V

Ignition switch turned ON, except the above
condition.

G52-28 GRY/BLU

Temperature control
actuator (HOT)

10 – 14 V

Ignition switch turned ON, temperature control
actuator is working in operation from COOL to HOT
position.

0 – 1 V

Ignition switch turned ON, except the above
condition.

G52-29 GRY/RED

Air flow control actuator
(VENT)

10 – 14 V

Ignition switch turned ON, air flow control actuator is
working in operation from DEF to VENT position.

0 – 1 V

Ignition switch turned ON, except the above
condition.

G52-30 GRY/BLK

Air flow control actuator
(DEF)

10 – 14 V

Ignition switch turned ON, air flow control actuator is
working in operation from VENT to DEF position.

0 – 1 V

Ignition switch turned ON, except the above
condition.

G52-31

ORN

Air intake control
actuator (FRE)

10 – 14 V

Ignition switch turned ON, air intake control actuator
is working in operation from REC to FRE position.

0 – 1 V

Ignition switch turned ON, except the above
condition.

G52-32

GRN

Air intake control
actuator (REC)

10 – 14 V

Ignition switch turned ON, air intake control actuator
is working in operation from FRE to REC position.

0 – 1 V

Ignition switch turned ON, except the above
condition.

Terminal

Wire

color

Circuit

Normal value

Condition

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