DTC P1659
DTC P1659 : ETCS Control Relay OFF Malfunction
| DTC Description | Confirmed DTC | Pending DTC |
|---|---|---|
| P1659 ECTS Control Relay OFF Malfunction |
DTC (PGM-FI)
- Problem verification
-1. Turn the vehicle to the ON mode.
-2. Clear the DTC with the HDS.
-3. Turn the vehicle to the OFF (LOCK) mode.
-4. Turn the vehicle to the ON mode.
-5. Check for Pending or Confirmed DTCs with the HDS.
DTC Description Confirmed DTC Pending DTC P1659 ECTS Control Relay OFF Malfunction DTC (PGM-FI)
Is DTC P1659 indicated?
YES
The failure is duplicated. Go to step 2.
NO
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the relay circuit board and the PCM. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot .
- Fuse check
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Check the No. B15 fuse .
Is the fuse OK?
YES
Go to step 3.
NO
Go to step 7.
- Relay circuit board check
-1. Remove and test the relay circuit board .
Is the relay circuit board OK?
YES
Go to step 4.
NO
- Open wire check (+B DBW line)
-1. Measure the voltage between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Relay circuit board: removed Test point 1 Relay circuit board connector C (18P) (female terminals) No. 14: Test point 2 Body ground Is there battery voltage?
YES
The +B DBW wire is OK. Go to step 5.
NO
Repair an open in the +B DBW wire between the No. B15 fuse and the relay circuit board.
- Open wire check (DBW RLY OUT line)
-1. Jump the SCS line with the HDS, and wait more than 1 minute.
-2. Disconnect the following connector.
PCM connector A (50P) -3. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Relay circuit board: removed PCM connector A (50P): disconnected Test point 1 Relay circuit board connector C (18P) (female terminals) No. 1: Test point 2 PCM connector A (50P) No. 16 Is there continuity?
YES
The DBW RLY OUT wire is OK. Go to step 6.
NO
Repair an open in the DBW RLY OUT wire between the PCM (A16) and the relay circuit board.
- Open wire check (DBW RLY CL- line)
-1. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Relay circuit board: removed PCM connector A (50P): disconnected Test point 1 Relay circuit board connector B (6P) (female terminals) No. 2: Test point 2 PCM connector A (50P) No. 25 Is there continuity?
YES
The DBW RLY CL- wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM , then recheck. If DTC P1659 goes away and the PCM was substituted, replace the original PCM .
NO
Repair an open in the DBW RLY CL- wire between the PCM (A25) and the relay circuit board.
- Relay circuit board check
-1. Remove and test the relay circuit board .
Is the relay circuit board OK?
YES
Go to step 8.
NO
- Shorted wire check (DBW RLY OUT line)
-1. Remove the No. B11 fuse.
-2. Jump the SCS line with the HDS, and wait more than 1 minute.
-3. Disconnect the following connector.
PCM connector A (50P) -4. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode No. B11 fuse: removed Relay circuit board: removed PCM connector A (50P): disconnected Test point 1 PCM connector A (50P) No. 16 Test point 2 Body ground Is there continuity?
YES
Repair a short in the DBW RLY OUT wire between the PCM (A16) and the relay circuit board. Also replace the No. B11 fuse.
NO
The DBW RLY OUT wire is OK. Go to step 9.
- Shorted wire check (+B DBW line)
-1. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Relay circuit board: removed PCM connector A (50P): disconnected Test point 1 Relay circuit board connector C (18P) (female terminals) No. 14: Test point 2 Body ground Is there continuity?
YES
Repair a short in the +B DBW wire between the No. B11 fuse and the relay circuit board. Also replace the No. B11 fuse.
NO
The +B DBW wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM , then recheck. If DTC P1659 goes away and the PCM was substituted, replace the original PCM . Also replace the No. B11 fuse.