Part Two

Keyless/Power Door Locks/Security System Symptom Troubleshooting - Auto door unlock does not work

NOTE:
* Refer to the Electrical Wiring Diagrams for the location of the under-dash fuse/relay box connectors.
* Before testing, check the No. B8 (15 A), No. B9 (10 A), No. B15 (10 A), No. B30 (10 A), No. B32 (15 A), No. B33 (15 A), and No. B41 (20 A) fuses in the under-dash fuse/relay box.
* There are two pairs of fuses in the same circuit (No. B8 and No. B32 fuses, No. B9 and No. B33 fuses, No. B15 and No. B30 fuses). If one fuse is blown, make sure to check the other fuse in the same circuit. If necessary, replace the blown fuse(s).

26. Keyless/power door locks/security system check 2:

-1. Turn the ignition switch to LOCK (0).

-2. Disconnect the following connector.






-3. Connect terminals A and B with a jumper wire.










-4. Check the parameter(s) below with the HDS.






Is information indicator ON?
-YES- Go to step 27.
-NO- Go to step 28.

27. Open wire check (GND line):

-1. Turn the ignition switch to LOCK (0).

-2. Check for continuity between test points 1 and 2.










Is there continuity?
-YES- The GND wire is OK. Replace the transmission range switch Service and Repair.
-NO- Repair an open or high resistance in the ground wire or poor ground (G101).

28. Open wire check (ATP-P line):

-1. Connect terminals A and B with a jumper wire.










-2. Check the parameter(s) below with the HDS.






Is information indicator ON?
-YES- Repair an open or high resistance in the wire.
-NO- The ATP-P wire is OK. Faulty MICU; replace the under-dash fuse/relay box Under-Dash Fuse/Relay Box Removal and Installation.

29. Keyless/power door locks/security system check 1:

-1. With the driver's door lock knob switch in LOCK position, check the parameter(s) below with the HDS.






Is information indicator ON?
-YES- Go to step 30.
-NO- Go to step 32.

30. Determine possible failure area (driver's door latch, others):

-1. Turn the ignition switch to LOCK (0).

-2. Disconnect the following connector.






-3. Check the parameter(s) below with the HDS.






Is information indicator OFF?
-YES- Faulty driver's door lock knob switch; replace the driver's door latch Service and Repair.
-NO- Go to step 31.

31. Shorted wire check (DR SILCON UNLOCK line):

-1. Turn the ignition switch to LOCK (0).

-2. Disconnect the following connector.






-3. Check for continuity between test points 1 and 2.










Is there continuity?
-YES- Repair a short to ground in the wire.
-NO- The DR SILCON UNLOCK wire is OK. Faulty MICU; replace the under-dash fuse/relay box Under-Dash Fuse/Relay Box Removal and Installation.

32. Keyless/power door locks/security system check 2:

-1. Turn the ignition switch to LOCK (0).

-2. Disconnect the following connector.






-3. Connect terminals A and B with a jumper wire.










-4. Check the parameter(s) below with the HDS.






Is information indicator ON?
-YES- Go to step 33.
-NO- Go to step 34.

33. Open wire check (GND line):

-1. Turn the ignition switch to LOCK (0).

-2. Check for continuity between test points 1 and 2.










Is there continuity?
-YES- The GND wire is OK. Faulty driver's door lock knob switch; replace the driver's door latch Service and Repair.
-NO- Repair an open or high resistance in the wire or poor ground (G501).

34. Open wire check (DR SILCON UNLOCK line):

-1. Connect terminals A and B with a jumper wire.










-2. Check the parameter(s) below with the HDS.






Is information indicator ON?
-YES- Repair an open or high resistance in the wire.
-NO- The DR SILCON UNLOCK wire is OK. Faulty MICU; replace the under-dash fuse/relay box Under-Dash Fuse/Relay Box Removal and Installation.

35. Keyless/power door locks/security system check 1:

-1. With the front passenger's door lock knob switch in LOCK position, check the parameter(s) below with the HDS.






Is information indicator ON?
-YES- Go to step 36.
-NO- Go to step 38.

36. Determine possible failure area (front passenger's door latch, others):

-1. Turn the ignition switch to LOCK (0).

-2. Disconnect the following connector.






-3. Check the parameter(s) below with the HDS.






Is information indicator OFF?
-YES- Faulty front passenger's door lock knob switch; replace the front passenger's door latch Service and Repair.
-NO- Go to step 37.

37. Shorted wire check (AS SILCON UNLOCK line):

-1. Turn the ignition switch to LOCK (0).

-2. Disconnect the following connector.






-3. Check for continuity between test points 1 and 2.










Is there continuity?
-YES- Repair a short to ground in the wire.
-NO- The AS SILCON UNLOCK wire is OK. Faulty MICU; replace the under-dash fuse/relay box Under-Dash Fuse/Relay Box Removal and Installation.

38. Keyless/power door locks/security system check 2:

-1. Turn the ignition switch to LOCK (0).

-2. Disconnect the following connector.






-3. Connect terminals A and B with a jumper wire.










-4. Check the parameter(s) below with the HDS.






Is information indicator ON?
-YES- Go to step 39.
-NO- Go to step 40.

39. Open wire check (GND line):

-1. Turn the ignition switch to LOCK (0).

-2. Check for continuity between test points 1 and 2.










Is there continuity?
-YES- The GND wire is OK. Faulty front passenger's door lock knob switch; replace the front passenger's door latch Service and Repair.
-NO- Repair an open or high resistance in the ground wire or poor ground (G503).

40. Open wire check (AS SILCON UNLOCK line):

-1. Connect terminals A and B with a jumper wire.










-2. Check the parameter(s) below with the HDS.






Is information indicator ON?
-YES- Repair an open or high resistance in the wire.
-NO- The AS SILCON UNLOCK wire is OK. Faulty MICU; replace the under-dash fuse/relay box Under-Dash Fuse/Relay Box Removal and Installation.

41. Keyless/power door locks/security system check 1:

-1. With the left rear door lock knob switch in LOCK position, check the parameter(s) below with the HDS.






Is information indicator ON?
-YES- Go to step 42.
-NO- Go to step 44.

42. Determine possible failure area (left rear door latch, others):

-1. Turn the ignition switch to LOCK (0).

-2. Disconnect the following connector.






-3. Check the parameter(s) below with the HDS.






Is information indicator OFF?
-YES- Faulty left rear door lock knob switch; replace the left rear door latch Service and Repair.
-NO- Go to step 43.

43. Shorted wire check (RR DR SILCON UNLOCK line):

-1. Turn the ignition switch to LOCK (0).

-2. Disconnect the following connector.






-3. Check for continuity between test points 1 and 2.










Is there continuity?
-YES- Repair a short to ground in the wire.
-NO- The RR DR SILCON UNLOCK wire is OK. Faulty MICU; replace the under-dash fuse/relay box Under-Dash Fuse/Relay Box Removal and Installation.

44. Keyless/power door locks/security system check 2:

-1. Turn the ignition switch to LOCK (0).

-2. Disconnect the following connector.






-3. Connect terminals A and B with a jumper wire.










-4. Check the parameter(s) below with the HDS.






Is information indicator ON?
-YES- Go to step 45.
-NO- Go to step 46.

45. Open wire check (GND line):

-1. Turn the ignition switch to LOCK (0).

-2. Check for continuity between test points 1 and 2.










Is there continuity?
-YES- The GND wire is OK. Faulty left rear door lock knob switch; replace the left rear door latch Service and Repair.
-NO- Repair an open or high resistance in the ground wire or poor ground (G601).

46. Open wire check (RR DR SILCON UNLOCK line):

-1. Connect terminals A and B with a jumper wire.










-2. Check the parameter(s) below with the HDS.






Is information indicator ON?
-YES- Repair an open or high resistance in the wire.
-NO- The RR DR SILCON UNLOCK wire is OK. Faulty MICU; replace the under-dash fuse/relay box Under-Dash Fuse/Relay Box Removal and Installation.

47. Keyless/power door locks/security system check 1:

-1. With the right rear door lock knob switch in LOCK position, check the parameter(s) below with the HDS.






Is information indicator ON?
-YES- Go to step 48.
-NO- Go to step 50.

48. Determine possible failure area (right rear door latch, others):

-1. Turn the ignition switch to LOCK (0).

-2. Disconnect the following connector.






-3. Check the parameter(s) below with the HDS.






Is information indicator OFF?
-YES- Faulty right rear door lock knob switch; replace the right rear door latch Service and Repair.
-NO- Go to step 49.

49. Shorted wire check (RR AS SILCON UNLOCK line):

-1. Turn the ignition switch to LOCK (0).

-2. Disconnect the following connector.






-3. Check for continuity between test points 1 and 2.










Is there continuity?
-YES- Repair a short to ground in the wire.
-NO- The RR AS SILCON UNLOCK wire is OK. Faulty MICU; replace the under-dash fuse/relay box Under-Dash Fuse/Relay Box Removal and Installation.

50. Keyless/power door locks/security system check 2:

-1. Turn the ignition switch to LOCK (0).

-2. Disconnect the following connector.






-3. Connect terminals A and B with a jumper wire.










-4. Check the parameter(s) below with the HDS.






Is information indicator ON?
-YES- Go to step 51.
-NO- Go to step 52.

51. Open wire check (GND line) 3:

-1. Turn the ignition switch to LOCK (0).

-2. Check for continuity between test points 1 and 2.










Is there continuity?
-YES- The GND wire is OK. Faulty right rear door lock knob switch; replace the right rear door latch Service and Repair.
-NO- Repair an open or high resistance in the ground wire or poor ground (G604).

52. Open wire check (RR AS SILCON UNLOCK line):

-1. Connect terminals A and B with a jumper wire.










-2. Check the parameter(s) below with the HDS.






Is information indicator ON?
-YES- Repair an open or high resistance in the wire.
-NO- The RR AS SILCON UNLOCK wire is OK. Faulty MICU; replace the under-dash fuse/relay box Under-Dash Fuse/Relay Box Removal and Installation.