First of all check damage of terminals : Check terminals for contact resistance, corrosion and deformation.
CMPS signal distinguishes crank angle and the cylinder which requires fuel injection in order to determine injection sequence and duration. Inspect CMPS signal because Impossible starting and Engine stalls can be caused by abnormal CMPS signal.
IG KEY "OFF", ENGINE "OFF".
Disconnect CMPS connector.
IG KEY "ON"
Measure the voltage of CMPS connector terminals.
In case of abnormal voltage at terminal "1", "2", "3".
"DTC" related with CMPS would be displayed.
- Refer to "DTC" troubleshooting procedures.
In case of normal voltage at terminal "1", "2", "3".
Go to "CMPS inspection" procedure.
IG KEY "ON", ENGINE "OFF".
Connect CMPS, CKPS connectors.
Connect a scantool to Data Link Connector (DLC).
Select oscilloscope function on the scantool
Connect channel A to CMPS connector terminal "2"
Connect channel B(+) to CKPS connector terminal "2" of and channel B(-) to CKPS connector terminal "3".
Monitor waveforms after ENGINE "ON" or ENGINE cranking.
Case 1 : CMPS signal is not displayed.
Inspect air gab and detecting tooth of camshaft after disconnecting CMPS.
Monitor the waveform when metal material is put to CMPS sensing point (CMPS is connected harness) closely.
- If CMPS signal is not displayed, replace the CMPS.
Case 2 : CMPS signal is displayed but reference point between CMPS signal and CKPS signal is abnormal.
Go to "Timing belt alignment inspection" procedure.
