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Home >> Suzuki >> 2004 >> Swift + >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 1.6L (L91) (DTC P0106 To DTC P0217) >> Diagnostic Information & Procedures >> DTC P0106 >> Test Description
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Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. 8:  While starting the engine, the MAP sensor should detect any changes in manifold pressure. This test is to determine if the sensor is stuck at a value.
  2. 9:  A normal MAP sensor will react as quickly to the throttle changes. A MAP sensor should not appear to be "lazy" or catch up with the throttle movements.
DTC P0106

Step Action Value Yes No
Schematic Reference: Engine Controls Schematics
Connector End View References: Engine Controls Connector End Views or Engine Control Module (ECM) Connector End Views
1 Did you perform the Diagnostic System Check - Engine Controls? - Go to Step 2  Go to Diagnostic System Check - Engine Controls
2
  1. Turn ON the ignition, with the engine OFF.
  2. Observe the Throttle Position (TP) Sensor voltage parameter with a scan tool.
Is the voltage within the specified value when the throttle is fully closed?		 0 V Go to Step 3  Go to Step 4 
3
  1. Observe the TP sensor angle parameter with a scan tool.
  2. Monitor the scan tool while slowly depressing the accelerator pedal to the floor, then slowly release the pedal. Repeat the procedure several times.
Does the TP angle increase steadily when the accelerator pedal is depressed to more than the first specified value, and decrease steadily, returning to less than the second specified value when the pedal is released?		 85%
15%		 Go to Step 5  Go to Step 18 
4 Inspect the throttle body for the following conditions:
  • A binding or damaged linkage
  • A binding or damaged throttle cable
  • A binding or damaged cruise control cable

Did you find and correct the condition?		 - Go to Step 38  Go to Step 18 
5
IMPORTANT: The vehicle used for the comparison is not limited to the same type of vehicle as is being serviced. A vehicle known to provide an accurate reading is acceptable.
Do you have access to another vehicle in which the manifold absolute pressure (MAP) sensor pressure can be observed with a scan tool?		 - Go to Step 6  Go to Step 7 
6
  1. Turn ON the ignition, with the engine OFF.
  2. Observe the MAP sensor pressure parameter with a scan tool.
  3. Observe the MAP sensor pressure parameter in the known good vehicle with a scan tool.
  4. Compare the values.
Is the difference between the values less than the specified value?		 3 kPa Go to Step 8  Go to Step 13 
7
IMPORTANT: The Altitude vs Barometric Pressure table indicates a pressure range for a given altitude under normal weather conditions. Weather conditions consisting of very low or very high pressure and/or very low or very high temperature may cause a reading to be slightly out of range.
  1. Turn ON the ignition, with the engine OFF.
  2. Observe the MAP sensor pressure parameter with a scan tool..
  3. The MAP sensor pressure should be within the range specified for your altitude.
Does the MAP sensor indicate the correct barometric pressure?		 - Go to Step 8  Go to Step 13 
8  Start the engine while observing the MAP sensor pressure parameter with the scan tool.
Does the MAP sensor pressure parameter change while starting the engine?		 - Go to Step 9  Go to Step 12 
9  With the engine running, snap the throttle while observing the MAP sensor pressure parameter on the scan tool.
Does the MAP sensor pressure parameter change rapidly when the throttle position changes?		 - Go to Step 10  Go to Step 12 
10
  1. Allow the engine to reach operating temperature.
  2. Ensure that the transaxle is in Park or Neutral.
  3. Turn OFF all of the accessories.
  4. Allow the engine to idle.
  5. Observe the MAP sensor pressure parameter with a scan tool.
Is the MAP sensor pressure within the specified range?		 12-96 kPa Go to Intermittent Conditions Go to Step 11 
11 Test for the following conditions:
Did you find and correct the condition?		 - Go to Step 38  Go to Step 13 
12
  1. Turn OFF the ignition.
  2. Remove the MAP sensor from the vacuum source.
  3. Inspect the port for the following conditions:
    • Vacuum restrictions
    • Vacuum leaks
Did you find and correct the condition?		 - Go to Step 38  Go to Step 13 
13
  1. Turn OFF the ignition.
  2. Disconnect the MAP sensor electrical connector.
  3. Turn ON the ignition.
  4. Observe the MAP sensor pressure parameter with a scan tool.
Is the pressure less than the specified value?		 12 kPa Go to Step 14  Go to Step 23 
14 Measure the voltage from the 5-volt reference circuit of the MAP sensor to a good ground with a DMM. Refer to Circuit Testing in Wiring Systems.
Is the voltage more than the specified value?		 5.2 V Go to Step 24  Go to Step 15 
15 Probe the 5-volt reference circuit of the MAP sensor with a test lamp that is connected to a good ground.
Is the test lamp OFF?		 - Go to Step 25  Go to Step 16 
16
  1. Connect a 3-amp fused jumper wire between the MAP sensor 5-volt reference circuit and the MAP sensor signal circuit.
  2. Observe the MAP sensor pressure parameter with a scan tool.
Is the pressure more than the specified value?		 12 kPa Go to Step 17  Go to Step 26 
17
  1. Remove the jumper wire.
  2. Connect a jumper wire between each of the terminals in the MAP sensor harness connector and the corresponding terminal at the MAP sensor. Refer to Using Connector Test Adapters in Wiring Systems.
  3. Turn ON the ignition, with the engine OFF.
  4. Measure the voltage from the low reference circuit of the MAP sensor, at the jumper wire terminal, to a good ground with a DMM. Refer to Measuring Voltage Drop in Wiring Systems.
Is the voltage more than the specified value?		 0.2 V Go to Step 27  Go to Step 32 
18
  1. Turn OFF the ignition.
  2. Disconnect the TP sensor.
  3. Turn ON the ignition.
  4. Observe the TP sensor voltage parameter with a scan tool.
Is the voltage less than the specified value?		 0.2 V Go to Step 19  Go to Step 28 
19 Measure the voltage from the TP sensor 5-volt reference circuit to a good ground.
Is the voltage more than the specified value?		 5.2 V Go to Step 24  Go to Step 20 
20 Probe the 5-volt reference circuit of the TP sensor with a test lamp that is connected to a good ground.
Is the test lamp OFF?		 - Go to Step 29  Go to Step 21 
21
  1. Connect a 3-amp fused jumper between the TP sensor 5-volt reference circuit and the TP sensor signal circuit.
  2. Observe the TP sensor pressure parameter with a scan tool.
Is the TP sensor pressure more than the specified value?		 0 % Go to Step 22  Go to Step 30 
22
  1. Remove the jumper wire.
  2. Connect a jumper wire between each of the terminals in the TP sensor harness connector and the corresponding terminal at the TP sensor. Refer to Using Connector Test Adapters in Wiring Systems.
  3. Turn ON the ignition, with the engine OFF.
  4. Measure the voltage from the low reference circuit of the TP sensor, at the jumper wire terminal, to a good ground with a DMM. Refer to Measuring Voltage Drop in Wiring Systems.
Is the voltage more than the specified value?		 0.2 V Go to Step 31  Go to Step 33 
23 Test the MAP sensor signal circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 38  Go to Step 37 
24 Test all of the 5-volt reference circuits for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 38  Go to Step 37 
25 Test the 5-volt reference circuit of the MAP sensor for an open or for high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 38  Go to Step 34 
26 Test the MAP sensor signal circuit for the following conditions:
  • An open
  • A short to ground
  • High resistance

Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 38  Go to Step 34 
27 Test the MAP sensor low reference circuit for high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 38  Go to Step 34 
28 Test the TP sensor signal circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 38  Go to Step 37 
29 Test the 5-volt reference circuit of the TP sensor for an open or for high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 38  Go to Step 34 
30 Test the TP sensor signal circuit for the following conditions:
  • An open
  • A short to ground
  • A high resistance

Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 38  Go to Step 34 
31 Test the low reference circuit of the TP sensor for high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 38  Go to Step 34 
32 Test for an intermittent and for a poor connection at the MAP sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 38  Go to Step 35 
33 Test for an intermittent and for a poor connection at the TP sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 38  Go to Step 36 
34 Test for an intermittent and for a poor connection at the ECM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 38  Go to Step 37 
35 Replace the MAP sensor. Refer to Manifold Absolute Pressure (MAP) Sensor Replacement .
Did you complete the replacement?		 - Go to Step 38  -
36 Replace the TP sensor. Refer to Throttle Position (TP) Sensor Replacement .
Did you complete the replacement?		 - Go to Step 38  -
37 Replace the ECM. Refer to Engine Control Module (ECM) Replacement .
Did you complete the replacement?		 - Go to Step 38  -
38
  1. Clear the DTCs with a scan tool.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?		 - Go to Step 2  Go to Step 39 
39 Observe the Capture Info with a scan tool.
Are there any DTCs that have not been diagnosed?		 - Go to Diagnostic Trouble Code (DTC) List System OK
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