ICMP packets on a local subnet?

["Mike ." <dmciscobgp () hotmail com>]

so help me here. i appologize if this question is dumb. i wanted to throw some packets at my local router and TIVO box, 
mainly ICMPs to see the response and what got accepted. apparently this cannot be done? even if i suppress the scan 
option and go directly with a ping scan i keep seeing nmap forcing the ARP attempt to discover. is there a way to 
supress this to fire off said ICMPs? i am on windows so send-ip is out of the question (doens't work anyway, i tried) 
here is the output
 C:\Users\McKittrick\Desktop>nmap -n -vv -T4 -max-retries 3 -reason -PM -packet-trace 192.168.0.1 -sn

Starting Nmap 6.45 ( http://nmap.org ) at 2015-02-01 22:30 Central Standard Time

Initiating ARP Ping Scan at 22:30
Scanning 192.168.0.1 [1 port]
SENT (0.1230s) ARP who-has 192.168.0.1 tell 192.168.0.16
RCVD (0.1250s) ARP reply 192.168.0.1 is-at 50:39:55:44:F5:AE
Completed ARP Ping Scan at 22:30, 0.07s elapsed (1 total hosts)
Nmap scan report for 192.168.0.1
Host is up, received arp-response (0.0020s latency).
MAC Address: 50:39:55:44:F5:AE (Cisco Spvtg)
Read data files from: C:\Program Files\Nmap
Nmap done: 1 IP address (1 host up) scanned in 0.15 seconds
           Raw packets sent: 1 (28B) | Rcvd: 1 (28B)
if i use -Pn i get nothing basically. am i doing something wrong or is this just normal network limitations?

last question is this. this is more output using the max debug level. i am just curious how in the world it knows USER 
SET was received if , as you can see, not a single packet was created and sent out?????
C:\Users\McKittrick\Desktop>nmap -n -vv -T4 -max-retries 3 -reason -PE -packet-trace 192.168.0.1 -Pn -sn -d9

Nmap scan report for 192.168.0.1Host is up, received user-set.No data files read.Nmap done: 1 IP address (1 host up) 
scanned in 0.03 seconds

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