Dtc P0101: Mass Or Volume Air Flow Circuit Range / Performance - Suzuki 2006 SX4 Service Manual

1A-62 Engine General Information and Diagnosis:
Step
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?
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?

DTC P0101: Mass or Volume Air Flow Circuit Range / Performance

Wiring Diagram
GRN
2
WHT
BLK/YEL
7 8 9
5
15 14 13 12 11
30 29 28 27 26
44
45 43 42 41
59
60 58 57 56
A1: MAF sensor power supply circuit
A2: MAF sensor signal circuit
A3: MAF sensor ground circuit
B1: IAT sensor signal circuit
Action
6
3
BLK/YEL
BLK/RED
BLK/YEL
1
BLK/RED
B2 B1
GRY/BLU
E01
10 9 8 7 6 5 4 3
25 24 23 22 21 20 19 18
40 39 38 37 36 35 34 33
55 54 53 52 51 50 49 48
B2: IAT sensor ground circuit
1. MAF and IAT sensor
2. Ignition switch
3. Main relay
Go to Step 5.
Substitute a known-
good ECM and recheck.
BLK/WHT
E01-29
BRN/WHT E01-60
BLK/RED E01-1
A1
E01-16
BLK/RED
A2
PNK/BLK C01-26
A3
C01-27
GRY
LT GRN/BLK C01-25
GRY/BLU C01-57
2 1 15 14 13 12 11
17 16 30 29 28 27 26
44
32 31 45 43 42 41
59
47 46 60 58 57 56
4. ECM
5. To other sensors
6. "IG COIL" fuse
7. Fuse box No.2
Yes
Repair or replace
defective wiring harness
/ connector.
Replace HO2S.
4
C01-15 BLK
C01-30 BLK
C01-29
BLK
C01-48 BLK/ORN
C01-58
BLK/ORN
12V 5V
5V
C01
10 9 8 7 6 5 4 3
25 24 23 22 21 20 19 18
40 39 38 37 36 35 34 33
55 54 53 52 51 50 49 48
8. "IGN" fuse
9. "FI" fuse
No
S6RW0C1104017
2 1
17 16
32 31
47 46
I7RW01110046-03