Dtc P2122 / P2123: Throttle / Pedal Position Sensor / Switch "D" Circuit Low / High - Suzuki 2006 SX4 Service Manual

Step
3 Wire harness check
1) Disconnect connectors from electric throttle body
assembly and ECM with ignition switch turned OFF.
2) Check for proper terminal connection to electric throttle
body assembly connector and ECM.
3) If connection are OK, check that throttle actuator control
circuit is as follows.
• Wiring harness resistance of throttle actuator control
circuit (+) and (–) is less than 3 Ω
• Insulation resistance between throttle actuator control
circuit (+) and (–) and vehicle body ground is Infinity
• Insulation resistance between throttle actuator control
circuit (+) and (–) is infinity
• Circuit voltage of throttle actuator control circuit (+)
and (–) is 0 – 1 V with ignition switch turned ON
Are they in good condition?
4 Electric throttle body assembly check
1) Check electric throttle body for operation and condition
referring to "Electric Throttle Body Assembly On-Vehicle
Inspection in Section 1C".
Is it in good condition?

DTC P2122 / P2123: Throttle / Pedal Position Sensor / Switch "D" Circuit Low / High

Wiring Diagram
1
15 14 13 12 11
30 29 28 27 26
45 44 43 42 41
60 59 58 57 56
A1: APP sensor (main) power supply circuit
A2: APP sensor (main) signal circuit
A3: APP sensor (main) ground circuit
B1: APP sensor (sub) power supply circuit
Action
5
2
3
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: APP sensor (sub) signal circuit
B3. APP sensor (sub) ground circuit
1. APP sensor assembly
2. APP sensor (main)
Engine General Information and Diagnosis:
Go to Step 4.
Substitute a known-
good ECM and recheck.
A1
BRN
E01-56
A2
E01-55
GRN
A3
BLU
E01-54
B1
RED
E01-53
B2
YEL E01-52
B3
WHT E01-51
2 1 15 14 13 12 11
17 16 30 29 28 27 26
32 31 45 44 43 42 41
47 46 60 59 58 57 56
Yes
Repair or replace
control circuit of throttle
actuator (+) and/or (–) is
open, short or high
resistance.
Repair or replace
electric throttle body
assembly.
4
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
3. APP sensor (sub)
4. ECM
5. Ground of APP sensor for shield wire
1A-117
No
S6RW0C1104070
2 1
17 16
32 31
47 46
I7RW01110083-02