diff --git a/modules/canbus/vehicle/gem/protocol/wheel_speed_rpt_7a_test.cc b/modules/canbus/vehicle/gem/protocol/wheel_speed_rpt_7a_test.cc
index d3f7412aa19e3915405e461e0e8540f53b56ae27..dd4c9f5cfed086595cf61450e0bc35d584155412 100644
--- a/modules/canbus/vehicle/gem/protocol/wheel_speed_rpt_7a_test.cc
+++ b/modules/canbus/vehicle/gem/protocol/wheel_speed_rpt_7a_test.cc
@@ -31,24 +31,15 @@ TEST_F(Wheelspeedrpt7aTest, reset) {
   Wheelspeedrpt7a wheelspeed;
   int32_t length = 8;
   ChassisDetail chassis_detail;
-  uint8_t bytes[8] = {0, 0};
-
-  bytes[0] = 0b11111100;
-  bytes[1] = 0b11111110;
-  bytes[2] = 0b11111110;
-  bytes[3] = 0b11111110;
-  bytes[4] = 0b11111110;
-  bytes[5] = 0b11111110;
-  bytes[6] = 0b11111110;
-  bytes[7] = 0b11111110;
+  uint8_t bytes[8] = {0, 0};uint8_t bytes[8] = {0x01, 0x02, 0x03, 0x04, 0x11, 0x12, 0x13, 0x14};  
 
   wheelspeed.Parse(bytes, length, &chassis_detail);
-  EXPECT_DOUBLE_EQ(chassis_detail.gem().wheel_speed_rpt_7a().wheel_spd_rear_right(), -2.58);
-  EXPECT_DOUBLE_EQ(chassis_detail.gem().wheel_speed_rpt_7a().wheel_spd_rear_left(), -2.6);
-  EXPECT_DOUBLE_EQ(chassis_detail.gem().wheel_speed_rpt_7a().wheel_spd_front_right(), -2.6);
-  EXPECT_DOUBLE_EQ(chassis_detail.gem().wheel_speed_rpt_7a().wheel_spd_front_left(), -2.6);
+  EXPECT_DOUBLE_EQ(chassis_detail.gem().wheel_speed_rpt_7a().wheel_spd_rear_right(), 258);
+  EXPECT_DOUBLE_EQ(chassis_detail.gem().wheel_speed_rpt_7a().wheel_spd_rear_left(), 772);
+  EXPECT_DOUBLE_EQ(chassis_detail.gem().wheel_speed_rpt_7a().wheel_spd_front_right(), 4370);
+  EXPECT_DOUBLE_EQ(chassis_detail.gem().wheel_speed_rpt_7a().wheel_spd_front_left(), 4884);
 }
 
 }  // namespace gem
 }  // namespace canbus
-}  // namespace apollo
\ No newline at end of file
+}  // namespace apollo