Power Supply & Ground Circuit Checks
- Disconnect Smart Entrance Control Unit (SECU) 18-pin connector and measure voltage between ground and terminals No. 10 (Green/Red wire) and No. 11 (White/Red wire). See Fig 1
. If battery voltage is present, go to next step. If battery voltage is not present, inspect the following:
- Fusible link "F" (40-amp) located in fuse and fusible link box on right side of engine compartment.
- Fuse No. 24 (7.5-amp) located in fuse block J/B under left side of instrument panel.
- M145 circuit breaker located in-line between SECU terminal No. 11 and fusible link "F".
- White/Red wire between M145 circuit breaker and SECU, and White/Black wire between M145 circuit breaker and fusible link "F" for an open or short.
- Disconnect SECU 24-pin connector and measure voltage between terminal No. 21 and ground with ignition switch turned to ACC position. See Fig 1
. If battery voltage is present, go to next step. If battery voltage is not present, inspect the following:
- Fuse No. 10 (10-amp) located in fuse block J/B under left side of instrument panel.
- Green/White wire between SECU and fuse No. 10 for an open or short.
- With SECU 24-pin connector removed, measure voltage between terminal No. 33 and ground with ignition switch turned to ON position. See Fig 1
. If battery voltage is present, go to next step. If battery voltage is not present, inspect the following:
- Fuse No. 8 (10-amp) located in fuse block J/B under left side of instrument panel.
- Green/Red wire between SECU and fuse No. 8 for an open or short.
- With SECU 18-pin connector removed, check continuity between terminal No. 16 and ground. See Fig 1 . If continuity is present, power supply and ground circuits are okay. If continuity is not present, repair poor ground connection in Black wire between SECU and ground (located behind left kick panel).