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6E-234 Engine Control System (4JH1) DTC P1690 (Symptom Code 4) (Flash Code 77) Circuit Description • The MIL informs the driver that a malfunction has occurred and the vehicle should be taken in for • The MIL illuminates during a bulb test and a system test. • A DTC will be stored if a MIL is requested by the ECM. If the ECM detects an open circuit or short circuit on the • The ignition switch is ON.
Condition for Setting the DTC • The ECM detects a low voltage condition on the MIL control circuit for longer than 3 seconds when Action Taken When the DTC Sets • The ECM does not illuminates the MIL when the diagnostic runs and fails. Condition for Clearing the DTC • A history DTC clears after 40 consecutive driving cycles without a fault. Or clear with the scan tool. Diagnostic Aids • If an intermittent condition is suspected, refer to Intermittent Conditions in this section.
DTC P1690 (Symptom Code 4) (Flash Code 77)
Step Action Value(s) Yes No 1 Did you perform the Diagnostic System Check- Go to Step 2 Go to Diagnostic System Check- Engine Controls 2 1. Install the scan tool. test with the scan tool. 4. Command the MIL ON with the scan tool. Go to Step 3 Go to Step 4 3 Command the MIL OFF with the scan tool. Go to Step 17 Go to Step 10 4 1. Turn OFF the ignition. fuse block. Is the Meter (15A) fuse (C-14) open? Go to Step 5 Go to Step 6 5 Replace the Meter (15A) fuse (C-14). If the fuse Go to Step 19 6 1. Turn OFF the ignition. harness connector. 3. Turn ON the ignition, with the engine OFF. MIL control circuit of the ECM harness connector Does the MIL illuminate? Go to Step 11 Go to Step 7 |