Allison B 400 - Page 44

6–8 Copyright © 1998 General Motors Corp.
DIAGNOSTIC CODES
WTEC II ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL
45
(cont’d)
15 Open circuit, D solenoid circuit Yes
DNS, SOL OFF
(Hydraulic default), DNA
16 Open circuit, E solenoid circuit Yes
DNS, SOL OFF
(Hydraulic default), DNA
21 Open circuit, F solenoid circuit No Lockup inhibited, DNA
22 Open circuit, G solenoid circuit Yes
DNS, SOL OFF
(Hydraulic default), DNA
23 Open circuit, H solenoid circuit No
Retarder allowed, differential lock
inhibited
24 Open circuit, J solenoid circuit No Low and 1st inhibited
25 Open circuit, K solenoid circuit No Retarder operation inhibited
26 Open circuit, N solenoid circuit No Low and 1st inhibited
51 01
Offgoing ratio test (during shift),
L to 1
Yes DNS, RPR, DNA
10
Offgoing ratio test (during shift),
1 to L
Yes DNS, RPR, DNA
12
Offgoing ratio test (during shift),
1 to 2
Yes DNS, RPR, DNA
21
Offgoing ratio test (during shift),
2 to 1
Yes DNS, RPR, DNA
23
Offgoing ratio test (during shift),
2 to 3
Yes DNS, RPR, DNA
24
Offgoing ratio test (during shift),
2 to 4
Yes DNS, RPR, DNA
35
Offgoing ratio test (during shift),
3 to 5
Yes DNS, RPR, DNA
42
Offgoing ratio test (during shift),
4 to 2
Yes DNS, RPR, DNA
43
Offgoing ratio test (during shift),
4 to 3
Yes
(1)
DNS, RPR, DNA
45
Offgoing ratio test (during shift),
4 to 5
Yes
(1)
DNS, RPR, DNA
46
Offgoing ratio test (during shift),
4 to 6
Yes DNS, RPR, DNA
53
Offgoing ratio test (during shift),
5 to 3
Yes DNS, RPR, DNA
Table 6–2. WT Series Diagnostic Codes (cont’d)
Main
Code
Subcode Description
DO NOT
SHIFT
Light
Inhibited Operation
Description