Dtc P0101: Mass Air Flow Circuit Range / Performance - Suzuki Grand Vitara 2011 Manual

1A-79 Engine General Information and Diagnosis: For Petrol Engine Model
Step
10 HO2S heater control circuit check
1) Disconnect connector from ECM with ignition switch
turned OFF.
2) Check for proper connection of HO2S-2 heater circuit
terminal to ECM connector.
3) If connection are OK, measure wire resistance of sensor
heater control circuit at ECM connector between ECM to
HO2S-2.
Is measured wire resistance lower than 1
11 HO2S-2 heater circuit check
1) Measure insulation resistance between control terminal
of HO2S-2 heater at ECM connector and vehicle body
ground.
Is measured resistance infinity?

DTC P0101: Mass Air Flow Circuit Range / Performance

Wiring Diagram
BLK/YEL
2
WHT/GRN
BLK/RED
5
15 14 13 12 11
30 28 27 26
29
45 44 43 42 41
60 59 58 57 56
1. MAF and IAT sensor
2. Ignition switch
Action
Ω
3
BLK/RED
BLU/BLK
BLK/RED
1
BLU/BLK
GRY/GRN
E23
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
3. Main relay
4. ECM
Go to Step 11.
?
Substitute a known
good ECM and recheck.
BLK/WHT
BLU
BLU/BLK
BLU/BLK
RED
BLU
LT GRN
GRY/GRN
14 11
2 1 15 13 12
17 16 30 28 27 26
29
32 31 45 44 43 42 41
47 46 60 59 58 57 56
Yes
Repair or replace
defective wire circuit.
Repair or replace short
wire.
4
E23-29
C37-15 BLK/ORN
C37-30 BLK/ORN
C37-29
BLK/YEL
C37-48
BLK/YEL
E23-60
BLK/YEL
C37-58
5V
12V
E23-1
E23-16
C37-26
C37-27
5V
C37-25
C37-57
C37
10 9 7 6 5 4 3
8
25 24 23 22 21 20 19 18
40 39 38 37 36 35 34 33
55 54 53 52 51 50 49 48
5. To other sensors
No
S6JB0A1114018
2 1
17 16
32 31
47 46
I5JB0A110033-01