Suzuki 2006 SX4, Service Manual

Page: 106 / 1478

1A-62 Engine General Information and Diagnosis:
DTC P0101: Mass or Volume Air Flow Circuit Range / Performance
S6RW0C1104017
Wiring Diagram
4 HO2S heater circuit check
1) Disconnect connectors from ECM and check for proper
terminal connection to ECM connector.
2) If connections are OK, check that HO2S heater circuit is
as follows.
• Insulation resistance of wire harness is infinity
between “Control circuit of HO2S heater” terminal and
each other terminal at HO2S connector.
• Wiring harness resistance of “Control circuit of HO2S
heater” is less than 1
Ω
.
• Insulation resistance between “Control circuit of
HO2S heater” and vehicle body ground is infinity.
Is it in good condition?
Go to Step 5. Repair or replace
defective wiring harness
/ connector.
5 HO2S heater check
1) Check heater resistance of HO2S referring to “Heated
Oxygen Sensor (HO2S) Heater On-Vehicle Inspection in
Section 1C”.
Is HO2S heater in good condition?
Substitute a known-
good ECM and recheck. Replace HO2S.
Step Action Yes No
E01 C01
3 4
18 19
5 6 7 10 11
17 20
47 46 49 50 51
21 22
52
16 25
9
24
14
29
55 57 54 53 59 60 58
2
26 27 28
15
30
56 48
32 31 34 35 36 37 40 42 39 38
44
45 43 41 33
1 12 13
23
8 3 4
18 19
5 6 7 10 11
17 20
47 46 49 50 51
21 22
52
16 25
9
24
14
29
55 57 54 53 59 60 58
2
26 27 28
15
30
56 48
32 31 34 35 36 37 40 42 39 38
44
45 43 41 33
1 12 13
23
8
BLK/WHT
BLK/RED
BLK/YEL BLK/YEL
BLK/YEL
GRN
BRN/WHT
12V
5V
5V
2
3
6
7 8 9
4
E01-29
E01-1
E01-60
E01-16
LT GRN/BLK
GRY/BLU
1
C01-25
C01-57
5
GRY
PNK/BLK C01-26
C01-27
C01-15
C01-29
C01-48
C01-58
C01-30
BLK/RED
BLK/RED
BLK/RED
WHT
BLK
BLK
BLK
BLK/ORN
BLK/ORN
GRY/BLU
A1
A2
A3
B1 B2
I7RW01110046-03
A1: MAF sensor power supply circuit B2: IAT sensor ground circuit 4. ECM 8. “IGN” fuse
A2: MAF sensor signal circuit 1. MAF and IAT sensor 5. To other sensors 9. “FI” fuse
A3: MAF sensor ground circuit 2. Ignition switch 6. “IG COIL” fuse
B1: IAT sensor signal circuit 3. Main relay 7. Fuse box No.2