Engine Controls (For California)

DTC P0850 PNP SWITCH





Component Description
When the shift lever position is Neutral, park/neutral position (PNP) switch is ON. (M/T)
When the shift lever position is P or N, transmission range switch is ON. (CVT)
ECM detects the position because the continuity of the line (the ON signal) exists.




CONSULT-III Reference Value in Data Monitor Mode
Specification data are reference values.









On Board Diagnosis Logic









DTC Confirmation Procedure

CAUTION:
Always drive vehicle at a safe speed.

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

WITH CONSULT-III
1. Turn ignition switch ON.
2. Select "P/N POSI SW" in "DATA MONITOR" mode with CONSULT-III. Then check the "P/N POSI SW" signal under the following conditions.






If NG, go to SEE Diagnosis Procedure.
If OK, go to following step.
3. Select "DATA MONITOR" mode with CONSULT-III.
4. Start engine and warm it up to normal operating temperature.
5. Maintain the following conditions for at least 60 consecutive seconds.






6. Check 1st trip DTC.
7. If 1st trip DTC is detected, go to SEE Diagnosis Procedure.




Overall Function Check
Use this procedure to check the overall function of the park/neutral position (PNP) signal circuit. During this check, a 1st trip DTC might not be confirmed.

WITH GST
1. Turn ignition switch ON.





2. Check voltage between ECM terminal 14 (PNP signal) and ground under the following conditions.






3. If NG, go to SEE Diagnosis Procedure.




Wiring Diagram





Specification data are reference values and are measured between each terminal and ground.

CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.









Diagnosis Procedure

M/T MODELS
1.CHECK PNP SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect PNP switch harness connector.
3. Turn ignition switch ON.





4. Check voltage between PNP switch terminal 2 and ground with
CONSULT-III or tester.






OK or NG
OK - GO TO 3.
NG - GO TO 2.
2.DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors M2, E4
- Harness connectors E3, F2
- 10 A fuse
- Harness for open or short between PNP switch and fuse
- Repair open circuit or short to ground or short to power in harness or connectors.
3.CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between PNP switch terminal 3 and ECM terminal 14. Refer to Wiring Diagram.






4. Also check harness for short to ground and short to power.
OK or NG
OK - GO TO 4.
NG - Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK PNP SWITCH
RS6F52H.
OK or NG
OK - GO TO 5.
NG - Replace PNP switch. Disassembly And Assembly.
5.CHECK INTERMITTENT INCIDENT
For California For California.
- INSPECTION END

CVT MODELS
1.CHECK TRANSMISSION RANGE SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect transmission range switch harness connector.
3. Turn ignition switch ON.





4. Check voltage between transmission range switch terminal 7 and ground with CONSULT-III or tester.






OK or NG
OK - GO TO 3.
NG - GO TO 2.
2.DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors E3, F2
- 10 A fuse
- Harness for open or short between transmission range switch and fuse
- Repair open circuit or short to ground or short to power in harness or connectors.
3.CHECK PNP INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between transmission range switch terminal 6 and ECM terminal 14. Refer to Wiring Diagram.






4. Also check harness for short to ground and short to power.
OK or NG
OK - GO TO 4.
NG - Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK TRANSMISSION RANGE SWITCH
P0705.
OK or NG
OK - GO TO 5.
NG - Replace transmission range switch. Service and Repair.
5.CHECK INTERMITTENT INCIDENT
For California For California.
- INSPECTION END