Diagnostic Trouble Codes Troubleshooting

DTC TROUBLESHOOTING

Step	Action	Yes	No
1	Was "Engine and Emission Control System Check" performed?	Go To Step 2.	Go to "ENGINE AND EMISSION CONTROL SYSTEM CHECK :".
2	Check CKP sensor and starter motor (1) for resistance Disconnect CKP sensor connector with ignition switch turned OFF. Then check for proper connection to CKP sensor connector at "BLK/RED" and "BRN" wire terminals. If OK, measure sensor resistance between terminals. CKP sensor resistance 484 - 656 KΩ at 20°C, 68°F Fig 1: Checking Connection To CKP Sensor Connector And Wire Terminals Courtesy of SUZUKI OF AMERICA CORP. Measure resistance between each terminal and ground. Between CKP sensor terminal and ground resistance 1 MΩ or more. Were measured resistance valves in step 3 and 4 as specified?	Go To Step 3.	Replace CKP sensor.
3	Check ECM voltage Turn ON ignition switch, check voltage between "BLK/ RED" wire terminal of CKP sensor connector and engine ground and between "BRN" wire terminal of CKP sensor connector and engine ground. Is voltage about 0 V at each terminal?	Go To Step 4.	"BLK/RED" and/or "BRN" wire shorted to power supply circuit. If wires are OK, substitute a known-good ECM and recheck.
4	Check ECM circuit Turn OFF ignition switch, check that there is continuity between "BLK/RED" wire terminal of CKP sensor connector and engine ground and between "BRN" wire terminal of CKP sensor connector and engine ground. Is there continuity?	Go To Step 5.	Open wire in "BLK/RED" and/or "BRN" circuit. If wires are OK, substitute a known-good ECM and recheck.
5	Check wire circuit Disconnect connectors from ECM with ignition switch turned OFF. Measure resistance between "C45-27" terminal of CKP sensor connector and body ground and between "C45-34" terminal of CKP sensor connector and body ground. Is resistance infinity?	Go To Step 6.	"BLK/RED" and/or "BRN" wire shorted to ground circuit.
6	Check wire circuit Connect connector to CKP sensor with ignition switch turned OFF. Measure resistance between "C45-27" and "C45-34" terminals of ECM connector. Is resistance below 670 Ω at 20°C, 68T?	Go To Step 7.	High resistance wire in "BLK/RED" and/or "BRN" circuit.
7	Check visually CKP sensor and sensor plate (5) Damage No foreign material attached Correct installation Are they in good condition?	Intermittent trouble. Check for intermittent referring to INTERMITTENT AND POOR CONNECTION INSPECTION . Substitute a known-good ECM and recheck.	Clean, repair or replace.