Refer to “engine top side disassembly” .
Refer to “engine top side assembly” .
Camshaft identification
The exhaust camshaft has the embossed letters “ex” and the intake camshaft has the embossed letters “in”.
Cam wear
Check the camshaft for wear or damage.
Measure the cam height “a” with a micrometer.
Replace a camshaft if the cams are worn to the service limit.
Special tool
: 09900–20202 (micrometer (25 – 50
mm))
Cam height “a” service limit (in.): 37.38 Mm (1.472 In) service limit (ex.): 36.58 Mm (1.440 In)
Camshaft runout
Measure the runout using the dial gauge. Replace the camshaft if the runout exceeds the limit.
Special tool
(a): 09900–20607 (dial gauge)
(b): 09900–20701 (dial gauge chuck)
(c): 09900–21304 (v blocks)
Camshaft runout (in. & Ex.) Service limit: 0.10 Mm (0.004 In)
Camshaft journal wear
Inspect the camshaft journal wear in the following procedures:
Special tool
(a):
09900–22301 (plastigage (0.025 – 0.076
Mm))
(b):
09900–22302 (plastigage (0.051 – 0.152
Mm))
Refer to “engine top side assembly” .
Note do not rotate the camshafts with the plastigauge in place. |
Tightening torque camshaft journal holder bolt: 10 n·m (1.0 Kgfm, 7.0 Lbf-ft)
Camshaft journal oil clearance (in. & Ex.) Service limit: 0.150 Mm (0.0059 In)
Special tool
(c): 09900–20602 (dial gauge)
(d): 09900–22403 (small bore gauge
(18 –
35 mm))
(e): 09900–20205 (micrometer (0 – 25
mm))
Camshaft journal holder i.D. (In. & Ex.) Standard: 24.012 – 24.025 Mm (0.9454 – 0.9459 In)
Camshaft journal o.D. (In. & Ex.) Standard: 23.959 – 23.980 Mm (0.9433 – 0.9441 In)
Continuity check
Measure resistance across coupler “b” (between “a”
and “c” in figure).
If no continuity is indicated (infinity or over limit), the
circuit is open between terminals “a” and “c”.
Disconnect the coupler “b” and measure resistance
between couplers “a” and “b-1”.
If no continuity ...
DTC “c49” (p1656): pair control solenoid
valve circuit malfunction
Detected condition and possible cause
Detected condition
Possible cause
Pair control solenoid valve voltage is not input to ecm
Pair control solenoid valve circuit open or short.
Pair control solenoid valve malfunction.
Ecm malfunction.
...
Special tools and equipment
Recommended service material
Note
required service material is also described in the following.
“Lubrication points”
Special tool
...