PDF Service Manual Supplement Suzuki Liana RH413 RH416 A/C System - 384 KB
This supplementary service manual provides specific information for the automatic air conditioning system in the Suzuki Liana (RH413/RH416 models).
It covers diagnostics, repair procedures, and specifications unique to the A/C system.
This guide is designed to be used in conjunction with the main service manual.
It's an essential resource for technicians working on the climate control of these vehicles.
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SUPPLEMENTARY SERVICE MANUAL
FOR AUTOMATIC AIR CONDITIONING SYSTEM
USE THIS MANUAL WITH MANUALS
MENTIONED IN FOREWORD OF THIS
MANUAL.
99501-54G20-01E
--- Page 3 ---
AIR CONDITIONING (OPTIONAL) 1B-7
Condition Possible Cause Correction
No cool air comes out Fuse blown Check related fuses and short cir-
(A/C condenser cool- cuit to ground.
ing fan motor does not Wiring or grounding faulty Check wiring and grounding.
operate) Condenser cooling fan motor relay faulty Check condenser cooling fan motor
relay referring to “Compressor
Relay and Condenser Cooling Fan
Relay” in this section.
Condenser cooling fan motor faulty Check condenser cooling fan motor
referring to “Condenser Cooling
Fan” in this section.
ECM and/or its circuit faulty Check ECM and/or its circuit refer-
ring to “A/C System Inspection of
ECM and its Circuits” in this sec-
tion.
HVAC control module and/or its circuit faulty Check HVAC control module and/or
its circuit referring to “HVAC Control
Module and its Circuits” in this sec-
tion.
No cool air comes out Fuse blown Check related fuses and short cir-
(Blower motor does cuit to ground.
not operate) Blower motor controller faulty Check blower motor controller
referring to “Blower Motor Control-
ler” in this section.
Blower speed selector faulty Check blower speed selector refer-
ring to “Panel Unit (HVAC Control
Module) Inspection” in this section.
HVAC control module faulty Check HVAC control module refer-
ring to “HVAC Control Module and
its Circuits” in this section.
Wiring or grounding faulty Check wiring and grounding.
Blower motor faulty Check blower motor referring to
“Blower Motor” in Section 1A.
Blower relay faulty Check blower relay and/or blower
high relay referring to “Blower
Motor and Blower Motor High
Relays” in Section 1A.
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AIR CONDITIONING (OPTIONAL) 1B-17
Customer complaint analysis
Talk to customer, and then record details of the problem.
CUSTOMER QUESTIONNAIRE (EXAMPLE)
Visual inspection
As a preliminary step, be sure to perform visual check of the items that support proper function of the air condi-
tioning referring to “Visual Inspection” in this section.
DTC check
Check DTC referring to “DTC Check” in this section.
Troubleshooting malfunction
Based on the DTC, perform an applicable DTC diagnostic flow and locate the cause of the trouble, namely in a
sensor, wire harness, connector, actuator, HVAC control module or other part and repair faulty parts.
A/C system symptom diagnosis
Check any part or system suspected to be a possible cause referring to “General Diagnosis Table” in this sec-
tion.
Check for intermittent problem
Check any part where an intermittent trouble is easy to occur (e.g., wire harness, connector, etc.), referring to
“Intermittent and Poor Connection” in Section 0A and related circuit of trouble cord recorded.
Final confirmation test
Confirm if the problem symptom is troubleshot and the A/C system is free from any abnormal conditions. If there
existed DTC, clear the DTC. Then, check if the DTC is still detected and if there is any other DTC.
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AIR CONDITIONING (OPTIONAL) 1B-27
DTC B1501 (No.01): Outside Air Temperature Sensor and its Circuit Malfunc-
tion
WIRING DIAGRAM
1
2 3
G77-29 YEL/BLK
9
29
G77-9 BLK/RED
1. HVAC control module 2. Outside air temperature sensor 3. HVAC module connector “G77” (viewed from terminal side)
DTC DETECTING CONDITION AND TROUBLE AREA
DTC Detecting Condition Trouble Area
• Outside air temperature signal is less than the specified (0.7 V) • “YEL/BLK” or “BLK/RED” wire circuit
(Outside air temperature is less than –44 °C, –111 °F). open or short
• Outside air temperature signal is more than the specified (3.3 V) • Outside air temperature sensor mal-
(Outside air temperature is more than 155 °C, 311 °F). function
• Board unit in HVAC control module
DTC TROUBLESHOOTING
Step Action Yes No
1 1) Remove outside air temperature sensor and Go to Step 2. “YEL/BLK” wire circuit
HVAC control module referring to “Outside open.
Air Temperature Sensor” and “HVAC Con-
trol Module”.
2) Check for proper connection of outside air
temperature sensor connector at “YEL/BLK”
wire and HVAC control module connector at
“G77-29” wire terminals.
3) If OK, measure resistance between outside
air temperature sensor connector at “YEL/
BLK” wire and HVAC control module con-
nector at “G77-29” wire terminals.
Is resistance 1 Ω or less?
2 1) Check for proper connection of outside air Go to Step 3. “BLK/RED” wire circuit
temperature sensor connector at “BLK/ open.
RED” wire and HVAC control module con-
nector at “G77-9” wire terminals.
2) If OK, measure resistance between outside
temperature sensor connector at “BLK/
RED” wire and HVAC control module con-
nector at “G77-9” wire terminals.
Is resistance 1 Ω or less?
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AIR CONDITIONING (OPTIONAL) 1B-37
Step Action Yes No
3 1) Check for proper connection or air flow con- Go to Step 4. “BLK/RED” wire circuit
trol actuator connector at “BLK/RED” wire open.
and HVAC control module connector at
“G77-9” wire terminals.
2) If OK, measure resistance between air flow
control actuator connector at “BLK/RED”
wire and HVAC control module connector at
“G77-9” wire terminals.
Is resistance 1 Ω or less?
4 1) Turn ignition switch to ON position. Go to Step 5. “BLK/RED” wire shorted
2) Check voltage between HVAC control mod- to power circuit.
ule connector at “G77-9” wire terminal and
body ground.
Is voltage 0 V?
5 1) Turn ignition switch to OFF position. Go to Step 7. “RED/WHT” wire shorted
2) Connect HVAC control module connector. to ground circuit or
3) With ignition switch ON, check voltage shorted power circuit. If
between air flow control actuator connector OK, replace board unit in
at “RED/WHT” wire terminal and body HVAC control module.
ground.
Is voltage about 4 – 5 V?
6 1) Check voltage between air flow control actu- Go to Step 7. “WHT/BLU” wire shorted
ator connector at “WHT/BLU” wire terminal to ground circuit or
and body ground. shorted power circuit. If
Is voltage about 4 – 5 V? OK, replace board unit in
HVAC control module.
7 1) Check air flow control actuator referring to Replace board unit in Replace air flow control
“Air Flow Control Actuator” in this section. HVAC control module. actuator.
Is it in good condition?
DTC B1513 (No.13): Temperature Control Actuator and its Circuit Malfunction
WIRING DIAGRAM
1 2
G77-20 GRY
G77-19 GRY/BLU 3
9
G77-26 RED/WHT
28 26 20 19
G77-28 WHT
G77-9 BLK/RED
1. HVAC control module 2. Temperature control actuator 3. HVAC control module connector “G77” (viewed from terminal side)
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AIR CONDITIONING (OPTIONAL) 1B-47
INSPECTION
Warm up water temperature sensor. Then, make sure that its
resistance is decreased as its temperature increases. If check
result is not satisfactory, replace water temperature sensor with
new one.
Water temperature sensor resistance
Approximately 315 Ω at 80 °C (176 °F)
(5.74)
Resistance
2.28 2.61
(1.15)
(0.584)
0.303 0.326
0
20 40 60 80
68 104 140 176
Temperature
INSTALLATION
Reverse removal procedure for installation.
Sunload Sensor
REMOVAL
1) Disconnect negative (–) cable at battery.
1 2) Remove combination meter referring to “Combination Meter”
in Section 8.
3) Remove sunload sensor (1) from instrument panel.
2
4) Disconnect sunload sensor connector (2).
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AIR CONDITIONING (OPTIONAL) 1B-57
INSTALLATION
Reverse removal procedure to install A/C refrigerant pressure
switch noting the following instruction.
• Tighten A/C refrigerant pressure switch as specified torque.
Tightening torque
3
A/C refrigerant pressure switch (a):
11 N·m (1.1 kg-m, 8.0 lb-ft)
3. RH head light
1 2, (a)
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WIRING DIAGRAM 8A-3-7
E: Main harness
E: Hauptkabelbaum
E: Faisceau de fils électriques principal
E: Mazo de cables principal
LHD
E29 E28 E27 E72 E69
E33
(TO L02)
E34
(TO G25)
E35 E37 E68 E66 E70 E30 E24 E23
(TO G26) (TO G28) (TO G75) (TO G10)
E36 E32 E65 E67 E25 E26
(TO G27) (TO G76)