P1607

1NZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1607: Cruise Control Input Processor
P1607 - Cruise Control Input Processor

DESCRIPTION

The ECM continuously monitors its main and sub CPUs. This self-check ensures that the ECM is functioning properly. If outputs from the CPUs are different and deviate from the standard, the ECM will illuminate the MIL and store a DTC immediately.





MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS





CONFIRMATION DRIVING PATTERN





* Connect the Techstream to the DLC3.

* Turn the ignition switch to ON and turn the Techstream on.

* Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).

* Turn the ignition switch off and wait for at least 30 seconds.

* Turn the ignition switch to ON and turn the Techstream on [A].

* Wait for 16 seconds or more.

* Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].

* Read pending DTCs.

HINT
- If a pending DTC is output, the system is malfunctioning.
- If a pending DTC is not output, perform the following procedure.
* Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

* Input the DTC: P1607.

* Check the DTC judgment result.





HINT
If the judgment result shows ABNORMAL, the system has a malfunction.

* If the test result is INCOMPLETE or UNKNOWN and no pending DTC is output, perform a universal trip and check for permanent DTCs DTC Check / Clear.

HINT
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.
INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTC

(a) Clear DTCs DTC Check / Clear.

(b) Turn the ignition switch off.

(c) Disconnect the cable from the negative battery terminal and wait for 1 minute.

(d) Connect the cable to the negative battery terminal.

(e) Turn the ignition switch to ON.

(f) Check for DTCs.

OK:

P1607 is not present.

NG -- REPLACE ECM Removal

OK -- CHECK FOR INTERMITTENT PROBLEMS