LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Suzuki >> 2006 >> Reno Premium, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Performance - DTC P0171 - P0352 >> DTC P0340: Camshaft Position (CMP) Sensor Circuit >> Troubleshooting
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC P0340: Camshaft Position (CMP) Sensor Circuit: Troubleshooting

TROUBLESHOOTING CHART

Step Action Value(s) Yes No
1 Perform an On-Board Diagnostic (OBD II) System Check.
Was the check performed?		 - Go to Step 2 Go to On-Board Diagnostic (OBD II) System Check
2
  1. Turn the ignition OFF.
  2. Install a scan tool to the Data Link Connector (DLC).
  3. Idle the engine.

Is the Camshaft Position (CMP) Active Count incrementing?		 - Go to Step 3 Go to Step 4
3
  1. Turn the ignition ON.
  2. Review the Freeze Frame data and note the parameters.
  3. Start the engine and operate the vehicle within the Freeze Frame Conditions and Conditions for Setting the DTC as noted.

Is the CMP Active Counter incrementing?		 - Go to Step 13 Go to Step 4
4
  1. Turn the ignition OFF.
  2. Disconnect the CMP sensor connector.
  3. Turn the ignition ON.
  4. With a test light connected to ground, probe the CMP sensor harness connector, terminal 1.

Does the test light illuminate?		 - Go to Step 5 Go to Step 6
5 With a test light connected to B (+), probe the CMP sensor harness connector, terminal 2.
Does the test light illuminate?		 - Go to Step 7 Go to Step 8
6 Check for a poor connection or open in the CMP sensor B (+) feed circuit and repair as necessary.
Is the repair complete?		 - Go to Step 13 Go to Diagnostic Aids
7 Using a Digital Voltmeter (DVM), check the voltage between the CMP sensor harness connector, terminal 3 and ground.
Does the DVM display near the specified values?		 5 V Go to Step 11 Go to Step 9
8 Check for a poor connection or open in the CMP sensor ground circuit and repair as necessary.
Is the repair complete?		 - Go to Step 13 -
9
  1. Turn the ignition OFF.
  2. Disconnect the Engine Control Module (ECM) connector.
  3. Check for the CMP signal circuit for an open or short to round or short to B (+), and repair as needed.

Is the repair complete?		 - Go to Step 13 Go to Step 10
10 Check the CMP signal circuit for an open or short to ground and repair as needed.
Is the repair complete?		 - Go to Step 13 Go to Step 12
11
  1. Turn the ignition OFF.
  2. Replace the CMP sensor.

Is the repair complete?		 - Go to Step 13 -
12
  1. Turn the ignition OFF.
  2. Replace the ECM.

Is the repair complete?		 - Go to Step 13 -
13
  1. Using the scan tool, clear the DTCs.
  2. Start the engine and idle at normal operating temperature.
  3. Operate the vehicle within the conditions for setting this DTC as supported in the text.

Does the scan tool indicate that this diagnostic ran and passed?		 - Go to Step 14 Go to Step 2
14 Check if any additional DTCs are set.
Are any DTCs displayed that have not been diagnosed?		 - Go to applicable DTC table System OK
scientia non olet · About LEMON Manuals