Heat blower OPEL FRONTERA 1998 User Guide

6E–55 ENGINE DRIVEABILITY AND EMISSIONS
Damaged harness–Inspect the wiring harness for
damage. If the harness appears to OK, observe the
A/C clutch while moving connectors and wiring
harnesses related to the A/C. A sudden clutch
malfunction will indicate the source of the intermittent
fault.
A/C Clutch Diagnosis
This chart should be used for diagnosing the electrical
p o r t i o n o f t h e A / C c o m p r e s s o r c l u t c h c i r c u i t . A Te c h 2 w i l l
be used in diagnosing the system. The Tech 2 has the
ability to read the A/C request input to the PCM. The Tech
2 can display when the PCM has commanded the A/C
clutch “ON.” The Tech 2 should have the ability to
override the A/C request signal and energize the A/C
compressor relay.
Test Description
IMPORTANT:Do not engage the A/C compressor
clutch with the engine running if an A/C mode is not
selected at the A/C control switch.
The numbers below refer to the step numbers on the
Diagnostic Chart:3. This a test determine is the problem is with the
refrigerant system. If the switch is open, A/C
pressure gauges will be used to determine if the
pressure switch is faulty or if the system is partially
discharged or empty.
4. Although the normal complaint will be the A/C clutch
failing to engage, it is possible for a short circuit to
cause the clutch to run when A/C has not been
selected. This step is a test for that condition.
7. There is an extremely low probability that both relays
will fail at the same time, so the substitution process
is one way to check the A/C Thermostat relay. Use
a known good relay to do a substitution check.
9. The blower system furnishes a ground for the A/C
control circuit, and it also shares a power source
through the Heater and A/C Relay. The blower
must be “ON” in order to test the A/C system.
A/C Clutch Control Circuit Diagnosis
StepActionVa l u e ( s )Ye sNo
1Was the “On-Board Diagnostic (OBD) System Check”
performed?
—Go to Step 2
Go to OBD
System
Check
2Are any other DTCs stored?
—
Go to the
other DTC
chart(s) first
Go to Step 3
31. Disconnect the electrical connector at the pressure
switch located on the receiver/drier.
2. Use an ohmmeter to check continuity across the
pressure switch.
Is the pressure switch open?
—
Go to Air
Conditioning
to diagnose
the cause of
the open
pressure
switch
Go to Step 4
4IMPORTANT:Before continuing with the diagnosis, the
following conditions must be met:
The intake air temperature must be greater than
15
C. (60F).
The engine coolant temperature must be less
than 119
C (246F).
1. A/C “OFF.”
2. Start the engine and idle for 1 minute.
3. Observe the A/C compressor.
Is the A/C compressor clutch engaged even though
A/C has not been requested?
—Go to Step 45Go to Step 5
51. Idle the engine.
2. A/C “ON”.
3. Blower “ON”.
4. Observe the A/C compressor.
Is the A/C compressor magnetic clutch engaged?
—
Refer to
Diagnostic
Aids
Go to Step 6

6E–58
ENGINE DRIVEABILITY AND EMISSIONS
A/C Clutch Control Circuit Diagnosis
StepNo Ye s Va l u e ( s ) Action
341. Remove the A/C compressor relay.
2. Ignition “ON.”
3. Use a DVM to check voltage at both of the BRN
wires at the A/C compressor relay socket.
Is the voltage equal to the specified value?
+BGo to Step 36Go to Step 35
35Repair the faulty BRN wire between the A/C fuse and
the A/C compressor relay .
Is the action complete?
—Verify repair—
361. A/C compressor relay removed.
2. Engine idling.
3. A/C “ON.”
4. Blower “ON.”
5. Use a DVM to measure voltage between the
GRN/BLK wire at the A/C compressor relay socket
and battery
.
Did the DVM indicate the specified value?
+BGo to Step 40Go to Step 37
37Check for an open GRN/BLK wire between PCM
terminal B-14 and the A/C compressor relay.
Was the wire open?
—Go to Step 38Go to Step 39
38Repair the open GRN/BLK wire between the PCM and
the A/C compressor relay.
Is the action complete?
—Verify repair—
39Check for a damaged pin or terminal at B-14 of the
PCM.
Was a damaged pin or a terminal found?
—Go to Step 32Go to Step 33
401. A/C compressor relay removed.
2. Connect a fused jumper at the A/C compressor
relay socket between either BRN wire and the
BRN/YEL wire.
3. Engine idling.
4. A/C “ON.”
5. Blower “ON.”
Did the compressor magnetic clutch engage?
—Go to Step 41Go to Step 42
41Repair the A/C compressor relay.
Is the action complete?
—Verify repair—
42Check for an open circuit between the A/C compressor
relay and the A/C clutch.
Was an open circuit found?
—Go to Step 43Go to Step 44
43Repair the open circuit between the compressor Clutch
and the A/C compressor relay.
Is the action complete?
—Verify repair—
44Service the compressor clutch or replace the
compressor due to a faulty internal overheat switch.
Is the action complete?
—Verify repair—

3.0
W
3.0
L/R 3.0
L/B
0.5
O/G
AUDIO
CIGARETTE
LIGHTERBLOWER
MOTORMAGNETIC
CLUTCHPOWER
WINDOW
RELAY
(2)STOPLIGHT AUDIO
(14)
DOME LIGHTRR DEFOGGER
FRT DOOR LOCK &
POWER WINDOW SW C-11 10A
AUDIO
(ACC)
MIRROR
0.5
BRC-20 10A
AIR CON
0.85
G/WC-14 15A
STOP
A/T CONT
1.25
R/WC-15 20A
AUDIO (B)
3.0
L/OC-17 25A
RR
DEFOG
FUSE BOX
1.25
O/BC-12 20A
CIGAR
3.0
LC-19 25A
BLOWER
3.0
B/L 3.0
W5.0
W 5.0
W
5.0
W
C/B-2 30A
P/W,P/S,
S/R
0.5
R/WC-16 10A
CLOCK (B)
ROOM
1.25
LG/WC-18 20A
DOOR
LOCK
HEATER &
A/C RELAY
B-36
2
B-364
D08RWB16

3.0
W
3.0
L/R 3.0
L/B
0.5
O/G
AUDIO CIGARETTE
LIGHTERBLOWER
MOTORMAGNETIC
CLUTCHPOWER
WINDOW
RELAY
(2)STOPLIGHT AUDIO
(14)
DOME LIGHT FRT DOOR LOCK &
POWER WINDOW SW RR DEFOGGER C-11 10A
AUDIO
(ACC)
MIRROR
0.5
BRC-20 10A
AIR CON
0.85
G/WC-14 15A
STOP
A/T CONT
1.25
R/WC-15 20A
AUDIO (B)
3.0
L/OC-17 25A
RR
DEFOG
FUSE BOX
1.25
O/BC-12 20A
CIGAR
3.0
LC-19 25A
BLOWER
3.0
B/L 3.0
W5.0
W 5.0
W
5.0
W
C/B-2 30A
P/W,P/S,
S/R
0.5
R/WC-16 10A
CLOCK (B)
ROOM
1.25
LG/WC-18 20A
DOOR
LOCK
HEATER &
A/C RELAY
B-36
2
B-364
D08RWB21

B-22B-36
22
H-1512
17 B-22
B-19 1.25
B2.0
B 0.5
B
ANTI-THEFT & KEYLESS
ENTRY CONTROL UNITHEATER &
A/C RELAY
STARTER
(W/O ANTI-THEFT)IMMOBILIZER
CONTROL UNIT
(10)
0.85
B0.5
L/B0.5
G/Y 0.5
L 0.5
L
0.5
L/B
BODY-RH
B-2
BODY-LHB-18
BODY-RHB-19
BODY-RH
B-36
B-36
3.0
L/R5.0
W
0.3
B 0.85
W/R
3.0
B/W 30.0
B/R
C-19 25A
BLOWER
BLOWER
MOTORPRESSURE SW
(A/C)C-20 10A
AIR CON B-3612
1
34
BATT.(+) FUSE
C-8
1.25
B3.0
W
P-4
P-3
X-20IMMOBILIZER
RELAYX-20
X-20 X-2021
43
0.5
B/Y
D08RW586

3.0
B/Y STARTER SW
(IG1)
C-19 25A
BLOWER C-8 15A
ENGINEB-19
BODY-RH
FENDER-RH 0.85
W/G
0.3
B
1.25
B 0.85
W/G 0.5
B
0.85
W/G0.85
W/G0.85
W/G
HEATER & A/C
RELAY AC
GENERATOR
B-36B-36
BLOWER
MOTOR
1
34
3.0
L/R
3.0
LC-20 10A
AIR CON
A/C THERMO
RELAY(2)0.5
BR B-36101 23
4
H-13
1
C-39
1
H-142
B-36
CHARGE
RELAY
X-17X-17
X-1719
H-15
X-17 X-17
1 32
P-82H-3
1
H-3
2
H-2
3
5
H-3
12
H-42
13
H-15
10
H-16
QOS III CONTROL
UNIT(6)
or
QOS/EGR
CONTROL UNIT(18)A/T SHIFT
CONTROLLER
(5)CHARGE
WARNING
LIGHT
(METER)
P-8
IG S
LB P-8
1
H-2 5.0
W
5.0
W 2.0
W/B
3.0
W/B
0.85
B/Y
0.85
B/Y0.85
B/Y
0.85
W/G
0.85
W/L 0.85
B/Y5.0
W
5.0
W
5.0
W
5.0
W
3.0
W 0.5
B
0.5
BP-9
D08RW633

B-22B-36
22
H-153
H-413
17 B-22
B-19 1.25
B1.25
B 0.5
B
ANTI-THEFT & KEYLESS
ENTRY CONTROL UNITHEATER &
A/C RELAY
STARTER
(W/O ANTI-THEFT)
0.85
B0.5
L/B0.5
L
0.5
L
0.5
L/B
BODY-LH
B-18
BODY-LHB-19
BODY-LH
B-36
B-36
3.0
L/R5.0
W
0.3
B 0.5
O/G0.3
L/B
3.0
B/W 30.0
B/R
C-19 25A
BLOWER
BLOWER
MOTORPRESSURE SW
(A/C)C-20 10A
AIR CON B-3612
1
34
BATT.(+)
1.25
B3.0
W
STARTER SW
(ACC)
C-11
10A
AUDIO
(ACC)
P-4
P-3
5H-42
D08RW895

X-17
5
4
P-8
1H-32
H-21
H-22
H-133
X-17
3
H-32
C-39
3
P-8
IG
3
P-8
S
P-9
B
3
X-17
2
X-17
E
E
HEATER & A/C
RELAY
B-36
BLOWER
MOTORA/C THERMO
RELAY(2)
B-36
1.25
B 0.3
B
1
3 B-36
FENDER-RH
B-19
BODY-LH
3.0
B/Y
0.85
B/Y
0.85
B/Y
0.85
W/G 0.5
B
0.5
B0.5
B
CHARGE
RELAYA/C
GENERATOR
0.85
W/G 0.85
B/Y0.85
B/Y2.0
W/B
3.0
W/B
0.85
W/G
0.85
W/L5.0
W
5.0
W5.0
W
5.0
W
5.0
W
3.0
W
3.0
L/R
3.0
L0.5
BR 5.0
W STARTER SW
(IG1)
C-8 15A
ENGINE
3.0
L/B
0.5
O/G
0.5
O/G STARTER SW
(IG1)
C-11 10A
AUDIO(ACC)
C-19 25A
BLOWERC-20 10A
AIR CON
1
H-3
X-17
CHARGE
WARNING
LIGHT
(METER)QOS III
CONTROL UNIT(6)
OR
QOS/EGR
CONTROL UNIT(18) 1
B
A
2
4 B-361
H-14
D08RW898

B-5
BLOWER
MOTOR2
B-5
1
I-51
3I-51
I-51I-51
MAX HI
RELAY POWER
TRANSISTORI-50
I-50
4
H-202
H-26
10
1
3
H-20
121 2L/B
0.5P/G
12
I-32
16 I-32
P-2
0.85W/G5W
5W 0.5R/W
0.3B0.5R/W 0.3R/W
TAIL RELAY(4) ILLUMINATION
CONTROLLER0.5G/R 0.85G/R
1.25B
1.25B1.25B
0.5B
9 I-32 5W 3W
BATT
FL-1
80A
MAIN4B-36
33L/R
C-19 25A
BLOWERC-20 10A
AIR CON
3L 2L/B
0.3BR
0.5BR0.3BR 2/B 0.3GR
0.3GR/L0.5L/B
2/B
B-36
20
H-27 2
B-36H-14
1
B-36HEATER & A/C RELAY
STARTER RELAY(1)
H-141
H-1310
I-328
H-269
10 C-16
10A CLOCK ROOM
BODY-RHBODY-LH
B-18
B-19
B-1
AUTO A/C CONTROL UNITAUTO A/C CONTROL UNIT
I-3217
14 35 2112 337
I-32
22
29 6I-331 H-20
14
H-16
M
192B
I-33
2I-50
D08RY00118

0.5R/G
ILLUMINATION
CONTROLLER
12
I-32
157
I-32
16 I-3229
P-2
0.85W/R5W
3L 2L/B 2L/BBATT.
5W 0.5R/W
0.3B0.5R/W 0.3R/W
TAIL REAY(4) 0.5G/R 0.85R/W
1.25B
1.25B
0.5B
9 I-3236 5W 3W FL-1
80A
MAIN4
B-36
33L/RC-20 10A
AIR CON
C-19 25A
BLOWER
BLOWER
MOTOR
B-36 2
B-36H-14
1
B-36HEATER A/C RELAY
STARTER SW (ACC)
H-141
I-328
H-265
10 C-16 10A
CLOCK ROOM
C-11 10A
AUDIO
F-12 10A
TAIL-RH
BODY-LHB-19
BODY-RHB-22BH-481.25B 15
H-2614
I-50 2
AUTO A/C CONTORL UNIT AUTO A/C CONTORL UNIT
I-32
6
H-16
0.5BR 2B 2B0.3GR/W0.5L/B
0.3BR 0.3BR
19
I-33
33
22 21 3512
H-48
0.3GR/L
MAX HI
RELAY POWER
TRANSISTOR
I-51
3
H-4811
I-51
4I-50
3
I-512I-501
H-4815
I-511
B-51
B-5
2
H-484
M
17
I-33
14
D08RY00121