DTC No. | Detecting Condition | Possible Cause | Application engine |
P1690 | SMARTRA no response, SMARTRA message error | Communication line error (Open/Short etc.), Invalid message from SMARTRA to ECM | D2.0, β2.0 |
PROBLEM VERIFICATION
Connect the hi-scan (pro) to data link connector.
Turn the ignition switch to ON and verify the DTC "P1690" is displayed.
Erase the DTC "P1690" with the hi-scan (pro) and then monitor again.
Is the same code displayed ?
▶ Problem is intermittent and engine control module memory was not cleared.
▶ Check engine control main relay
CHECK ENGINE CONTROL MAIN RELAY
Check that an operating noise can be heard from the engine control main relay(A).
Check for continuity between the terminals of main relay.
▶ Replace the engine control main relay.
▶ Check power voltage to SMARTRA
CHECK POWER VOLTAGE TO SMARTRA
Turn the ignition switch to ON.
Measure the power input voltage of SMARTRA between SMARTRA harness connector terminal 4 and body ground.
Specification : approximately B+ (12V)
Is the voltage within the specification?
▶ Check for these problems ;
A blown ECU fusible link (20A) or sensor fuse (10A) in the engine compartment relay & fuse box.
An open or short in the wire between the engine control main relay and SMARTRA unit.
▶ Check harness and connector between SMARTRA unit and body ground
CHECK HARNESS AND CONNECTOR BETWEEN SMARTRA UNIT AND BODY GROUND
Check for continuity between SMARTRA harness connector terminal 3 and body ground.
Is there continuity ?
▶ Repair an open in the wire between the SMARTRA unit and the ECM.
▶ Check harness and connector between SMARTRA unit and ECM
CHECK HARNESS AND CONNECTOR BETWEEN SMARTRA UNIT AND ECM
Check for continuity between SMARTRA harness connector terminal 5 and ECM harness connector(C230-1/C130-1) terminal(11/47).
Is there continuity ?
▶ Repair an open in the wire between the SMARTRA unit and the ECM.
▶ If all the tests are OK, replace the SMARTRA unit and recheck.
