diff --git a/api/100J/HBY100-J.js b/api/100J/HBY100-J.js
index bae7095..266bb90 100644
--- a/api/100J/HBY100-J.js
+++ b/api/100J/HBY100-J.js
@@ -429,8 +429,27 @@ export function fetchBleLocation() {
     return protocolInstance.getLocation();
 }
 
-// 等待蓝牙连接（扫描中时轮询，设备页可能在后台完成连接，100J 扫描约 15s）
-function waitForBleConnection(maxWaitMs = 12000, intervalMs = 500) {
+// 100J 设备页扫描最长约 15s，指令侧不宜空等过久；适配器关闭时不应再轮询
+const WAIT_BLE_CONNECTED_MS = 5000;
+const BLE_POLL_INTERVAL_MS = 400;
+const BLE_RECONNECT_MS = 2000;
+
+/** 系统蓝牙开关是否开启（与手机设置一致，避免关机蓝牙仍白等 12s） */
+function getBleAdapterAvailable() {
+    return new Promise((resolve) => {
+        if (typeof uni.getBluetoothAdapterState !== 'function') {
+            resolve(true);
+            return;
+        }
+        uni.getBluetoothAdapterState({
+            success: (res) => resolve(!!res.available),
+            fail: () => resolve(false)
+        });
+    });
+}
+
+// 等待协议层出现 bleDeviceId（页面后台扫描/连接中），超时则走 4G
+function waitForBleConnection(maxWaitMs = WAIT_BLE_CONNECTED_MS, intervalMs = BLE_POLL_INTERVAL_MS) {
     if (protocolInstance.isBleConnected && protocolInstance.bleDeviceId) return Promise.resolve(true);
     return new Promise((resolve) => {
         const start = Date.now();
@@ -447,13 +466,13 @@ function waitForBleConnection(maxWaitMs = 12000, intervalMs = 500) {
             }
             setTimeout(tick, intervalMs);
         };
-        console.log('[100J] 蓝牙未连接，等待扫描/连接中...', maxWaitMs, 'ms');
+        console.log('[100J] 蓝牙未连接，短时等待扫描/连接…', maxWaitMs, 'ms');
         tick();
     });
 }
 
 // 暴露给页面：尝试重连蓝牙(优先策略：断线后发指令前先尝试重连)
-export function tryReconnectBle(timeoutMs = 2500) {
+export function tryReconnectBle(timeoutMs = BLE_RECONNECT_MS) {
     if (protocolInstance.isBleConnected) return Promise.resolve(true);
     if (!protocolInstance.bleDeviceId) return Promise.resolve(false);
     return new Promise((resolve) => {
@@ -565,28 +584,41 @@ function execWithBleFirst(bleExec, httpExec, logName, onWaiting) {
       return do4G();
     });
   }
-  // 无 bleDeviceId：页面可能在扫描，最多等 12s（否则用户以为点了没反应）
+  // 无 bleDeviceId：系统蓝牙关闭则立即 4G；开启则短时等页面扫描连上（不再白等 12s）
   if (!protocolInstance.bleDeviceId) {
-    if (typeof onWaiting === 'function') onWaiting();
-    else showWaitUi('蓝牙连接中…');
-    return waitForBleConnection(12000)
-      .then(connected => {
-        return connected ? doBle().catch(() => {
+    return getBleAdapterAvailable().then((adapterOk) => {
+      if (!adapterOk) {
+        console.log('[100J]', logName || '指令', '系统蓝牙未开启，走4G');
+        return do4G();
+      }
+      if (typeof onWaiting === 'function') onWaiting();
+      else showWaitUi('蓝牙连接中…');
+      return waitForBleConnection()
+        .then((connected) => {
+          return connected ? doBle().catch(() => {
+            console.log('[100J]', logName || '指令', '蓝牙失败，回退4G');
+            return do4G();
+          }) : do4G();
+        })
+        .finally(hideWaitUi);
+    });
+  }
+  // 有 bleDeviceId 但未连：系统蓝牙关则直接 4G，否则短时重连
+  return getBleAdapterAvailable().then((adapterOk) => {
+    if (!adapterOk) {
+      console.log('[100J]', logName || '指令', '系统蓝牙未开启，走4G');
+      return do4G();
+    }
+    if (typeof onWaiting !== 'function') showWaitUi('正在重连蓝牙…');
+    return tryReconnectBle()
+      .then((reconnected) => {
+        return reconnected ? doBle().catch(() => {
           console.log('[100J]', logName || '指令', '蓝牙失败，回退4G');
           return do4G();
         }) : do4G();
       })
       .finally(hideWaitUi);
-  }
-  if (typeof onWaiting !== 'function') showWaitUi('正在重连蓝牙…');
-  return tryReconnectBle(2500)
-    .then(reconnected => {
-      return reconnected ? doBle().catch(() => {
-        console.log('[100J]', logName || '指令', '蓝牙失败，回退4G');
-        return do4G();
-      }) : do4G();
-    })
-    .finally(hideWaitUi);
+  });
 }
 
 // 爆闪模式