P1607

2GR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1607: Cruise Control Input Processor
P1607 - Cruise Control Input Processor

MONITOR DESCRIPTION

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





MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS





CONFIRMATION DRIVING PATTERN





- Connect the Techstream to the DLC3.

- Turn the engine switch on (IG) and turn the Techstream on.

- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure) DTC Check / Clear.

- Turn the engine switch off and wait for 30 seconds.

- Turn the engine switch on (IG) and turn the Techstream on.

- Wait 16 seconds or more [A].

- Enter the following menus: Powertrain / Engine / Trouble Codes.

- Read the DTC [B].

- If a DTC is output, the system is malfunctioning.

HINT
If a DTC is not output, perform the following procedure.

- Enter the following menus: Powertrain / Engine / 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 judgment result shows NORMAL, the system is normal.
- If the judgment result shows INCOMPLETE or UNKNOWN, perform steps [A] again.
- Enter the following menus: Powertrain / Engine / Utility / All Readiness.

- Check the judgment result.

HINT
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows NORMAL, the system is normal.
- If the test result is INCOMPLETE or UNKNOWN and no 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. READ OUTPUT DTC (DTC P1607)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch to on (IG).

(c) Turn the Techstream on.

(d) Clear DTC DTC Check / Clear.

(e) Turn the engine switch to off and turn the Techstream off.

(f) Disconnect the Techstream.

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

(h) Connect the cable to the battery negative (-) terminal.

(i) Connect the Techstream to the DLC3.

(j) Turn the engine switch to on (IG).

(k) Wait 16 seconds or more.

(l) Turn the Techstream on.

(m) Select the following menu items: Powertrain / Engine / Trouble Codes.

(n) Read DTCs.

Result:





B -- REPLACE ECM Components

A -- CHECK FOR INTERMITTENT PROBLEMS