Power Mirror Control Unit Input Test
NOTE:
Before troubleshooting the DPMS, troubleshoot the multiplex integrated control system first using B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A
).
- Turn the ignition switch OFF.
- Remove the dashboard lower cover (see DRIVER'S DASHBOARD LOWER COVER REMOVAL/INSTALLATION ).
- Disconnect the 26P connector (A) from the power mirror control unit (B).
- Inspect the connector and socket terminals to be sure they are all making good contact.
- If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
- If the terminals look OK, go to step 5.
- With the connector still disconnected, make these input tests at the connector.
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, the control unit must be faulty; replace it.
SYSTEM INPUT TEST AND FUNCTION TESTCavity Wire Test condition Test: Desired result Possible cause if result is not obtained 25 BLK Under all conditions Check for continuity to ground:
There should be continuity.- Poor ground (G501)
- An open in the wire
12 YEL/GRN Ignition switch ON (II) Check for voltage to ground:
There should be battery voltage.- Blown No. 20 (7.5 A or 15 A) fuse in the under-dash fuse/relay box
- An open in the wire
13 WHT/RED Under all conditions Check for voltage to ground:
There should be battery voltage.- Blown No. 7 (7.5 A) fuse in the under-dash fuse/relay box
- An open in the wire
26 GRY/BLU Under all conditions Check for voltage to ground:
There should be battery voltage.- Blown No. 6 (7.5 A) fuse in the under-dash fuse/relay box
- An open in the wire
23 PUR Under all conditions Check for continuity between the No. 23 terminal and power seat control unit connector C (12P) No. 4 terminal:
There should be continuity.An open in the wire Power seat control unit connector (12P) disconnected Check for continuity between the No. 23 terminal and body ground:
There should be no continuity.A short to ground in the wire