Dtc P2138: Pedal Position Sensor (Main / Sub) Voltage Correlation - Suzuki Grand Vitara 2011 Manual

1A-215 Engine General Information and Diagnosis: For Petrol Engine Model
Step
7 Wire harness check
1) Turn OFF ignition switch.
2) Disconnect connectors from ECM.
3) Check for proper connection of ECM connector at "C37-
54" and "C37-40" terminals.
4) If OK, measure voltage between "C37-54" terminal of
ECM connector and engine ground, between "C37-40"
terminal of ECM connector and engine ground.
Is each voltage 0 V?
8 Wire harness check
1) Measure resistance between "BLK" wire terminal of
electric throttle body assembly connector and engine
ground, between "RED" wire terminal of electric throttle
body assembly connector and engine ground with
ignition switch turned OFF.
Is each resistance infinity?
9 Electric throttle body assembly check
1) Check throttle position sensor referring to "Throttle
Position Sensor Performance Check" under "Electric
Throttle Body Assembly On-Vehicle Inspection: For
Petrol Engine Model in Section 1C".
Is each output voltage within specified value?

DTC P2138: Pedal Position Sensor (Main / Sub) Voltage Correlation

Wiring Diagram
1
1-1
1-2
15 14 13 12 11
30 29 28 27 26
44
45 43 42 41
60 59 58 57 56
1. Accelerator pedal position (APP) sensor
assembly
1-1. Accelerator pedal position (APP) sensor
(main)
Action
3
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
1-2. Accelerator pedal position (APP) sensor (sub)
2. ECM
Go to Step 8.
Substitute a known-
good ECM and recheck.
Substitute a known-
good ECM and recheck.
WHT E23-56
WHT/BLU
E23-55
ORN E23-54
ORN/BLU E23-53
BLU/GRN
E23-52
BLU/YEL
E23-51
2 1 15 14 13 12 11
17 16 30 29 28 27 26
44
32 31 45 43 42 41
47 46 60 59 58 57 56
Yes
"BLK" wire or "RED"
wire is shorted to other
circuit.
"BLK" wire or "RED"
wire is shorted to other
circuit.
Replace electric throttle
body assembly.
2
5 V
5 V
C37
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. Ground of accelerator pedal position (APP)
sensor for shield wire
No
S6JB0A1114078
2 1
17 16
32 31
47 46
I5JB0A110070-01