Test 3: ASCD Steering Wheel Switch Check

Turn ignition switch to LOCK position. Disconnect ASCD control unit harness connector. Turn ignition switch to ON position. With ASCD steering wheel switch in indicated positions, check voltage at the specified ASCD control unit harness connector terminal(s). See ASCD STEERING WHEEL SWITCH VOLTAGE SPECIFICATIONS table. See Figure . If voltage is as specified, ASCD steering switch is okay. If voltage is not as specified, go to next step.

ASCD STEERING WHEEL SWITCH VOLTAGE SPECIFICATIONS

Switch & Condition	Terminal(s) No.	Volts
Main
Pressed	9 & Ground	Zero
Released	9 & Ground	9
Set/Coast
Pressed	11 & Ground	12
Released	11 & Ground	Zero
Resume/Accel
Pressed	24 & Ground	12
Released	24 & Ground	Zero
Cancel
Pressed	11, 24 & Ground	12
Released	11, 24 & Ground	Zero

Press horn button. If horn operates, go to next step. If horn does not operate, check fuse No. 52 (7.5-amp) in fuse/relay box, horn relay, or open or short between horn and fuse. See WIRING DIAGRAMS .
Using ohmmeter, backprobe ASCD steering switch harness connector. With ASCD steering switch in indicated positions, check continuity between specified switch connector terminals. See Fig 1 . If continuity is as specified, check for an open or short in harness between ASCD steering switch and ASCD control unit. If continuity is not as specified, replace ASCD steering switch.

Fig 1: Inspecting ASCD Steering Wheel Switch

Courtesy of NISSAN MOTOR CO., U.S.A.